Guest guest Posted March 12, 2005 Report Share Posted March 12, 2005 Dear Members, I would like to draw your attention to different ways of performing the dasa calculation. Assume a dasa subperiod starts on 1-1-2000. Assume also that it lasts 3.7 years. Let N be the number of days per year (360, 365.25, etc.). The problem is to find out the ending date of this subperiod. There are (at least?) three strategies to adopt here. I will show the working, assuming N = 360. Procedure -1: ------------- 1) Convert the duration into number of days. Since the duration is 3.7 years, multiply this by 360. D = 1332 days. 2) Add the number of days so arrived at to the starting date. That is, add 1332 days to 1 - 1 - 2000. This gives us 25th Aug 2003. Procedure - 2: -------------- 1) Add completed (whole) years to the starting date. 2000 + 3 = 2003, date is 1 - 1 - 2003 2) Convert fractional year to days. Multiply 0.7 by 360. D = 252 days 3) Add this to (1). 1-1-2003 plus 252 days gives 10th Sept 2003 Procedure - 3: -------------- 1) Add completed (whole) years to the starting date. 2000 + 3 = 2003, date is 1 - 1 - 2003 2) Convert fractional years to months. Multiply 0.7 by 12. M = 8.4 3) Add completed months to (1). 1-1-2003 plus 8 months gives 1st Sept 2003. 4) Calculate the average number of days in a month. This comes to N/12, i.e., 360/12 = 30. 5) Convert the fractional month to days. Multiply 0.4 by 30. This comes to 12. 6) Add this to (3). The end date comes to 13th Sept 2003 Thus, for the same " 360 days per year " option, depending on which of the three procedures you follow, the end date is different. I think we have been debating over the past few days as to which of these is appropriate. Regards, Rangarajan Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 12, 2005 Report Share Posted March 12, 2005 The 3rd is more appropriate as per KP readers and other texts. Mukesh - Rangarajan Krishnamoorthy Saturday, March 12, 2005 10:49 AM Dasa Subperiod Calculation Dear Members,I would like to draw your attention to different ways of performing the dasa calculation.Assume a dasa subperiod starts on 1-1-2000. Assume also that it lasts 3.7 years. Let N be the number of days per year (360, 365.25, etc.). The problem is to find out the ending date of this subperiod. There are (at least?) three strategies to adopt here. I will show the working, assuming N = 360.Procedure -1:-------------1) Convert the duration into number of days. Since the duration is 3.7 years, multiply this by 360. D = 1332 days.2) Add the number of days so arrived at to the starting date. That is, add 1332 days to 1 - 1 - 2000. This gives us 25th Aug 2003.Procedure - 2:--------------1) Add completed (whole) years to the starting date. 2000 + 3 = 2003, date is 1 - 1 - 20032) Convert fractional year to days. Multiply 0.7 by 360. D = 252 days3) Add this to (1). 1-1-2003 plus 252 days gives 10th Sept 2003Procedure - 3:--------------1) Add completed (whole) years to the starting date. 2000 + 3 = 2003, date is 1 - 1 - 20032) Convert fractional years to months. Multiply 0.7 by 12. M = 8.43) Add completed months to (1). 1-1-2003 plus 8 months gives 1st Sept 2003.4) Calculate the average number of days in a month. This comes to N/12, i.e., 360/12 = 30.5) Convert the fractional month to days. Multiply 0.4 by 30. This comes to 12. 6) Add this to (3). The end date comes to 13th Sept 2003Thus, for the same "360 days per year" option, depending on which of the three procedures you follow, the end date is different. I think we have been debating over the past few days as to which of these is appropriate.Regards,Rangarajan Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 12, 2005 Report Share Posted March 12, 2005 Dear Rangarajan, I agree with Mukesh. Procedure -3 is the one mentioned by Guruji KSK " for convenience and for easy calculation of sub sub periods 360 days are taken.---But 365.25 days must be taken " , ie., application of 365.25 D/Y (the same as Gregorian calender) with 360 D/Y (12m/y, 30 d/m) based durations of dasa subperiods given in p 91 of KP Reader I. Best regards, tw , " mukesh " <mukeshgupta@b...> wrote: > The 3rd is more appropriate as per KP readers and other texts. > > Mukesh > - > Rangarajan Krishnamoorthy > > Saturday, March 12, 2005 10:49 AM > Dasa Subperiod Calculation > > > > Dear Members, > I would like to draw your attention to different ways of performing > the dasa calculation. > > Assume a dasa subperiod starts on 1-1-2000. Assume also that it > lasts 3.7 years. Let N be the number of days per year (360, 365.25, > etc.). The problem is to find out the ending date of this subperiod. > There are (at least?) three strategies to adopt here. I will show > the working, assuming N = 360. > > Procedure -1: > ------------- > 1) Convert the duration into number of days. Since the duration is > 3.7 years, multiply this by 360. D = 1332 days. > 2) Add the number of days so arrived at to the starting date. That > is, add 1332 days to 1 - 1 - 2000. This gives us 25th Aug 2003. > > Procedure - 2: > -------------- > 1) Add completed (whole) years to the starting date. 2000 + 3 = > 2003, date is 1 - 1 - 2003 > 2) Convert fractional year to days. Multiply 0.7 by 360. D = 252 days > 3) Add this to (1). 1-1-2003 plus 252 days gives 10th Sept 2003 > > Procedure - 3: > -------------- > 1) Add completed (whole) years to the starting date. 2000 + 3 = > 2003, date is 1 - 1 - 2003 > 2) Convert fractional years to months. Multiply 0.7 by 12. M = 8.4 > 3) Add completed months to (1). 1-1-2003 plus 8 months gives 1st > Sept 2003. > 4) Calculate the average number of days in a month. This comes to > N/12, i.e., 360/12 = 30. > 5) Convert the fractional month to days. Multiply 0.4 by 30. This > comes to 12. > 6) Add this to (3). The end date comes to 13th Sept 2003 > > Thus, for the same " 360 days per year " option, depending on which of > the three procedures you follow, the end date is different. > > I think we have been debating over the past few days as to which of > these is appropriate. > > Regards, > Rangarajan > > > > > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 12, 2005 Report Share Posted March 12, 2005 Dear Rangarajan, Let me add my hope that that Procedure -3 is the right answer to your question below. Best regards, tw >>Message 2779 of 2958 | Previous | Next [ Up Thread ] >> " Rangarajan Krishnamoorthy " <ranga@m...> Fri Mar 4, >>2005 2:18 am Vimshottari Period >>>Dear All, >>I am sorry I am raising an old issue again. I would like to >>drawyour attention to pages 96 and 97 of KP Reader No. 1. Shri. KSK >>hasargued in favour of 365.25 days per year in these pages. >>Inparticular, you will this towards the end of page 97: " ... Hence >>only Soura Manam, i.e., year made up of 356.25 daysalone is to be >>adopted.For convenience and for easy calculation of sub sub periods >>360 daysare taken, as the difference is negligible. But 365.25 days >>must betaken. " I do not wish to rake up any controversy, but please >>comment, if youwish. >>Regards, >>Rangarajan , " tw853 " <tw853> wrote: > > Dear Rangarajan, > > I agree with Mukesh. Procedure -3 is the one mentioned by Guruji > KSK " for convenience and for easy calculation of sub sub periods 360 > days are taken.---But 365.25 days must be taken " , ie., application of > 365.25 D/Y (the same as Gregorian calender) with 360 D/Y (12m/y, 30 > d/m) based durations of dasa subperiods given in p 91 of KP Reader I. > > > Best regards, > > tw > > > > > > , " mukesh " <mukeshgupta@b...> wrote: > > The 3rd is more appropriate as per KP readers and other texts. > > > > Mukesh > > - > > Rangarajan Krishnamoorthy > > > > Saturday, March 12, 2005 10:49 AM > > Dasa Subperiod Calculation > > > > > > > > Dear Members, > > I would like to draw your attention to different ways of > performing > > the dasa calculation. > > > > Assume a dasa subperiod starts on 1-1-2000. Assume also that it > > lasts 3.7 years. Let N be the number of days per year (360, > 365.25, > > etc.). The problem is to find out the ending date of this > subperiod. > > There are (at least?) three strategies to adopt here. I will show > > the working, assuming N = 360. > > > > Procedure -1: > > ------------- > > 1) Convert the duration into number of days. Since the duration > is > > 3.7 years, multiply this by 360. D = 1332 days. > > 2) Add the number of days so arrived at to the starting date. > That > > is, add 1332 days to 1 - 1 - 2000. This gives us 25th Aug 2003. > > > > Procedure - 2: > > -------------- > > 1) Add completed (whole) years to the starting date. 2000 + 3 = > > 2003, date is 1 - 1 - 2003 > > 2) Convert fractional year to days. Multiply 0.7 by 360. D = 252 > days > > 3) Add this to (1). 1-1-2003 plus 252 days gives 10th Sept 2003 > > > > Procedure - 3: > > -------------- > > 1) Add completed (whole) years to the starting date. 2000 + 3 = > > 2003, date is 1 - 1 - 2003 > > 2) Convert fractional years to months. Multiply 0.7 by 12. M = 8.4 > > 3) Add completed months to (1). 1-1-2003 plus 8 months gives 1st > > Sept 2003. > > 4) Calculate the average number of days in a month. This comes to > > N/12, i.e., 360/12 = 30. > > 5) Convert the fractional month to days. Multiply 0.4 by 30. This > > comes to 12. > > 6) Add this to (3). The end date comes to 13th Sept 2003 > > > > Thus, for the same " 360 days per year " option, depending on which > of > > the three procedures you follow, the end date is different. > > > > I think we have been debating over the past few days as to which > of > > these is appropriate. > > > > Regards, > > Rangarajan > > > > > > > > > > > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 12, 2005 Report Share Posted March 12, 2005 Dear Rangarajan, Procedure - 3 is what Prof KSK taught in his Readers. Following his methodology one will get 13 Sep 2003. The calculation for this is as follows: Dasa sub period starts on 1-1-2000 at 0000 hours (midnight) Duration of dasa sub period = 3.7 years 0.7*360 = 8.4 months 0.4*30 = 12 days So duration of dasa sub period =3 years, 8 months and 12 days Add the above to the start date of dasa sub period to get end of dasa sub period, (A) We get 13-9-2003 at 0000 hours (midnight) It must however be noted that the date indicated above (13-9-2003) is a date in the 360 days per year calendar. To get the ACTUAL date in the Gregorian calendar, the calculations will be: Dasa sub period starts on 1-1-2000 at 0000 hours (midnight) Duration of dasa sub period = 3.7 years 0.7*365.2422 = 255.66954 days 0.66954*24 = 16.06896 hours 0.06896*60 = 4.1376 minutes 0.1376*60 = 8.256 seconds So duration of dasa sub period =3 years, 255 days, 16 hours, 4 minutes and 8.256 seconds Add the above to the start date of dasa sub period in the Real Time Gregorian calendar to get end of dasa sub period, (B) We get 11-9-2003 at 1604 hours and 8.256seconds Note in the above calculations, (A) - (B) = 1 day, 7 hours, 55 minutes and 51.744 seconds The difference between the date obtained in the 360 days per year calendar and the Real Time Gregorian calendar can NEVER be more than 2 days. In this case, it is a little over one day. Considering that the birth time can be a few minutes off, either way, this can put the dasa sub period start and end dates off by a corresponding few days. So an error of 1 day, 7 hours (something) is negligible and can be overlooked. Regards. Vaidun Vidyadhar 1 / 94 Marius Street Tamworth, NSW 2340 Australia Tel: 61-2-67 668428 (home) Mobile: 0414 870 083 Email: vvidya Rangarajan Krishnamoorthy [ranga] Saturday, 12 March 2005 4:19 PM Subject: Dasa Subperiod Calculation Dear Members,I would like to draw your attention to different ways of performing the dasa calculation.Assume a dasa subperiod starts on 1-1-2000. Assume also that it lasts 3.7 years. Let N be the number of days per year (360, 365.25, etc.). The problem is to find out the ending date of this subperiod. There are (at least?) three strategies to adopt here. I will show the working, assuming N = 360.Procedure -1:-------------1) Convert the duration into number of days. Since the duration is 3.7 years, multiply this by 360. D = 1332 days.2) Add the number of days so arrived at to the starting date. That is, add 1332 days to 1 - 1 - 2000. This gives us 25th Aug 2003.Procedure - 2:--------------1) Add completed (whole) years to the starting date. 2000 + 3 = 2003, date is 1 - 1 - 20032) Convert fractional year to days. Multiply 0.7 by 360. D = 252 days3) Add this to (1). 1-1-2003 plus 252 days gives 10th Sept 2003Procedure - 3:--------------1) Add completed (whole) years to the starting date. 2000 + 3 = 2003, date is 1 - 1 - 20032) Convert fractional years to months. Multiply 0.7 by 12. M = 8.43) Add completed months to (1). 1-1-2003 plus 8 months gives 1st Sept 2003.4) Calculate the average number of days in a month. This comes to N/12, i.e., 360/12 = 30.5) Convert the fractional month to days. Multiply 0.4 by 30. This comes to 12. 6) Add this to (3). The end date comes to 13th Sept 2003Thus, for the same "360 days per year" option, depending on which of the three procedures you follow, the end date is different. I think we have been debating over the past few days as to which of these is appropriate.Regards,Rangarajan Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 13, 2005 Report Share Posted March 13, 2005 Dear Vaidun, In Proceduer -3 explained by Rangarajan, the full 3 years are 365.25 D/Y and the portion 0.7 is converted by 360 D/Y which is consistent with Guruji KSK saying " " for convenience and for easy calculation of sub sub periods 360 " and 1-1-2000 & 10th Sept 2003 dates are according to Gregorian calender which has been used parctically. Best regards, tw days are taken.---But 365.25 days must be taken " , " Vaidun Vidyadhar " <vvidya@o...> wrote: > Dear Rangarajan, > > Procedure - 3 is what Prof KSK taught in his Readers. Following his > methodology one will get 13 Sep 2003. > > The calculation for this is as follows: > Dasa sub period starts on 1-1-2000 at 0000 hours (midnight) > Duration of dasa sub period = 3.7 years > 0.7*360 = 8.4 months > 0.4*30 = 12 days > So duration of dasa sub period =3 years, 8 months and 12 days > Add the above to the start date of dasa sub period to get end of dasa sub > period, > (A) We get 13-9-2003 at 0000 hours (midnight) > > It must however be noted that the date indicated above (13-9-2003) is a date > in the 360 days per year calendar. > > To get the ACTUAL date in the Gregorian calendar, the calculations will be: > Dasa sub period starts on 1-1-2000 at 0000 hours (midnight) > Duration of dasa sub period = 3.7 years > 0.7*365.2422 = 255.66954 days > 0.66954*24 = 16.06896 hours > 0.06896*60 = 4.1376 minutes > 0.1376*60 = 8.256 seconds > So duration of dasa sub period =3 years, 255 days, 16 hours, 4 minutes and > 8.256 seconds > Add the above to the start date of dasa sub period in the Real Time > Gregorian calendar to get end of dasa sub period, > (B) We get 11-9-2003 at 1604 hours and 8.256seconds > > Note in the above calculations, (A) - (B) = 1 day, 7 hours, 55 minutes and > 51.744 seconds > > The difference between the date obtained in the 360 days per year calendar > and the Real Time Gregorian calendar can NEVER be more than 2 days. In this > case, it is a little over one day. Considering that the birth time can be a > few minutes off, either way, this can put the dasa sub period start and end > dates off by a corresponding few days. So an error of 1 day, 7 hours > (something) is negligible and can be overlooked. > > Regards. > > Vaidun Vidyadhar > 1 / 94 Marius Street > Tamworth, NSW 2340 > Australia > Tel: 61-2-67 668428 (home) > Mobile: 0414 870 083 > Email: <vvidya@o...> vvidya@o... > > > > > > _____ > > Rangarajan Krishnamoorthy [ranga@m...] > Saturday, 12 March 2005 4:19 PM > > Dasa Subperiod Calculation > > > > Dear Members, > I would like to draw your attention to different ways of performing > the dasa calculation. > > Assume a dasa subperiod starts on 1-1-2000. Assume also that it > lasts 3.7 years. Let N be the number of days per year (360, 365.25, > etc.). The problem is to find out the ending date of this subperiod. > There are (at least?) three strategies to adopt here. I will show > the working, assuming N = 360. > > Procedure -1: > ------------- > 1) Convert the duration into number of days. Since the duration is > 3.7 years, multiply this by 360. D = 1332 days. > 2) Add the number of days so arrived at to the starting date. That > is, add 1332 days to 1 - 1 - 2000. This gives us 25th Aug 2003. > > Procedure - 2: > -------------- > 1) Add completed (whole) years to the starting date. 2000 + 3 = > 2003, date is 1 - 1 - 2003 > 2) Convert fractional year to days. Multiply 0.7 by 360. D = 252 days > 3) Add this to (1). 1-1-2003 plus 252 days gives 10th Sept 2003 > > Procedure - 3: > -------------- > 1) Add completed (whole) years to the starting date. 2000 + 3 = > 2003, date is 1 - 1 - 2003 > 2) Convert fractional years to months. Multiply 0.7 by 12. M = 8.4 > 3) Add completed months to (1). 1-1-2003 plus 8 months gives 1st > Sept 2003. > 4) Calculate the average number of days in a month. This comes to > N/12, i.e., 360/12 = 30. > 5) Convert the fractional month to days. Multiply 0.4 by 30. This > comes to 12. > 6) Add this to (3). The end date comes to 13th Sept 2003 > > Thus, for the same " 360 days per year " option, depending on which of > the three procedures you follow, the end date is different. > > I think we have been debating over the past few days as to which of > these is appropriate. > > Regards, > Rangarajan Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 13, 2005 Report Share Posted March 13, 2005 Dear TW, As per Prof KSK, the length of the 360 days/year and 365.2422 days/year are the same. That is my understanding. It is just that we divide the solar year by 360 in one case (for ease of calculation) and the 365.2422 in the other case if one wants to obtain the correct date in the Gregorian calendar. Best regards. Vaidun Vidyadhar 1 / 94 Marius Street Tamworth, NSW 2340 Australia Tel: 61-2-67 668428 (home) Mobile: 0414 870 083 Email: vvidya tw853 [tw853] Sunday, 13 March 2005 1:51 PM Subject: Re: Dasa Subperiod Calculation Dear Vaidun,In Proceduer -3 explained by Rangarajan, the full 3 years are 365.25 D/Y and the portion 0.7 is converted by 360 D/Y which is consistent with Guruji KSK saying ""for convenience and for easy calculation of sub sub periods 360" and 1-1-2000 & 10th Sept 2003 dates are according to Gregorian calender which has been used parctically.Best regards,twdays are taken.---But 365.25 days must be taken" , "Vaidun Vidyadhar" <vvidya@o...> wrote:> Dear Rangarajan,> > Procedure - 3 is what Prof KSK taught in his Readers. Following his> methodology one will get 13 Sep 2003. > > The calculation for this is as follows:> Dasa sub period starts on 1-1-2000 at 0000 hours (midnight)> Duration of dasa sub period = 3.7 years> 0.7*360 = 8.4 months> 0.4*30 = 12 days> So duration of dasa sub period =3 years, 8 months and 12 days> Add the above to the start date of dasa sub period to get end of dasa sub> period, > (A) We get 13-9-2003 at 0000 hours (midnight)> > It must however be noted that the date indicated above (13-9-2003) is a date> in the 360 days per year calendar. > > To get the ACTUAL date in the Gregorian calendar, the calculations will be:> Dasa sub period starts on 1-1-2000 at 0000 hours (midnight)> Duration of dasa sub period = 3.7 years> 0.7*365.2422 = 255.66954 days> 0.66954*24 = 16.06896 hours> 0.06896*60 = 4.1376 minutes> 0.1376*60 = 8.256 seconds> So duration of dasa sub period =3 years, 255 days, 16 hours, 4 minutes and> 8.256 seconds> Add the above to the start date of dasa sub period in the Real Time> Gregorian calendar to get end of dasa sub period, > (B) We get 11-9-2003 at 1604 hours and 8.256seconds> > Note in the above calculations, (A) - (B) = 1 day, 7 hours, 55 minutes and> 51.744 seconds> > The difference between the date obtained in the 360 days per year calendar> and the Real Time Gregorian calendar can NEVER be more than 2 days. In this> case, it is a little over one day. Considering that the birth time can be a> few minutes off, either way, this can put the dasa sub period start and end> dates off by a corresponding few days. So an error of 1 day, 7 hours> (something) is negligible and can be overlooked.> > Regards.> > Vaidun Vidyadhar > 1 / 94 Marius Street > Tamworth, NSW 2340 > Australia > Tel: 61-2-67 668428 (home) > Mobile: 0414 870 083 > Email: <vvidya@o...> vvidya@o... > > > > > > _____ > > Rangarajan Krishnamoorthy [ranga@m...] > Saturday, 12 March 2005 4:19 PM> > Dasa Subperiod Calculation> > > > Dear Members,> I would like to draw your attention to different ways of performing > the dasa calculation.> > Assume a dasa subperiod starts on 1-1-2000. Assume also that it > lasts 3.7 years. Let N be the number of days per year (360, 365.25, > etc.). The problem is to find out the ending date of this subperiod. > There are (at least?) three strategies to adopt here. I will show > the working, assuming N = 360.> > Procedure -1:> -------------> 1) Convert the duration into number of days. Since the duration is > 3.7 years, multiply this by 360. D = 1332 days.> 2) Add the number of days so arrived at to the starting date. That > is, add 1332 days to 1 - 1 - 2000. This gives us 25th Aug 2003.> > Procedure - 2:> --------------> 1) Add completed (whole) years to the starting date. 2000 + 3 = > 2003, date is 1 - 1 - 2003> 2) Convert fractional year to days. Multiply 0.7 by 360. D = 252 days> 3) Add this to (1). 1-1-2003 plus 252 days gives 10th Sept 2003> > Procedure - 3:> --------------> 1) Add completed (whole) years to the starting date. 2000 + 3 = > 2003, date is 1 - 1 - 2003> 2) Convert fractional years to months. Multiply 0.7 by 12. M = 8.4> 3) Add completed months to (1). 1-1-2003 plus 8 months gives 1st > Sept 2003.> 4) Calculate the average number of days in a month. This comes to > N/12, i.e., 360/12 = 30.> 5) Convert the fractional month to days. Multiply 0.4 by 30. This > comes to 12. > 6) Add this to (3). The end date comes to 13th Sept 2003> > Thus, for the same "360 days per year" option, depending on which of > the three procedures you follow, the end date is different. > > I think we have been debating over the past few days as to which of > these is appropriate.> > Regards,> Rangarajan> > > > > > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 13, 2005 Report Share Posted March 13, 2005 Dear Vaidun, >> As per Prof KSK, the length of the 360 days/year and 365.2422 >>days/year are the same. That is my understanding. If so, why should we break our heads as mentioned by Sri Anant Raichur (Msg #2845). Thank you and best wishes, tw , " Vaidun Vidyadhar " <vvidya@o...> wrote: > Dear TW, > > As per Prof KSK, the length of the 360 days/year and 365.2422 days/year are > the same. That is my understanding. It is just that we divide the solar > year by 360 in one case (for ease of calculation) and the 365.2422 in the > other case if one wants to obtain the correct date in the Gregorian > calendar. > > Best regards. > > Vaidun Vidyadhar > 1 / 94 Marius Street > Tamworth, NSW 2340 > Australia > Tel: 61-2-67 668428 (home) > Mobile: 0414 870 083 > Email: <vvidya@o...> vvidya@o... > > > > > > _____ > > tw853 [tw853] > Sunday, 13 March 2005 1:51 PM > > Re: Dasa Subperiod Calculation > > > > > Dear Vaidun, > > > In Proceduer -3 explained by Rangarajan, the full 3 years are 365.25 > D/Y and the portion 0.7 is converted by 360 D/Y which is consistent > with Guruji KSK saying " " for convenience and for easy calculation of > sub sub periods 360 " and 1-1-2000 & 10th Sept 2003 dates are > according to Gregorian calender which has been used parctically. > > Best regards, > > tw > > > > > days are taken.---But 365.25 days must be taken " > , " Vaidun Vidyadhar " <vvidya@o...> > wrote: > > Dear Rangarajan, > > > > Procedure - 3 is what Prof KSK taught in his Readers. Following his > > methodology one will get 13 Sep 2003. > > > > The calculation for this is as follows: > > Dasa sub period starts on 1-1-2000 at 0000 hours (midnight) > > Duration of dasa sub period = 3.7 years > > 0.7*360 = 8.4 months > > 0.4*30 = 12 days > > So duration of dasa sub period =3 years, 8 months and 12 days > > Add the above to the start date of dasa sub period to get end of > dasa sub > > period, > > (A) We get 13-9-2003 at 0000 hours (midnight) > > > > It must however be noted that the date indicated above (13-9- 2003) > is a date > > in the 360 days per year calendar. > > > > To get the ACTUAL date in the Gregorian calendar, the calculations > will be: > > Dasa sub period starts on 1-1-2000 at 0000 hours (midnight) > > Duration of dasa sub period = 3.7 years > > 0.7*365.2422 = 255.66954 days > > 0.66954*24 = 16.06896 hours > > 0.06896*60 = 4.1376 minutes > > 0.1376*60 = 8.256 seconds > > So duration of dasa sub period =3 years, 255 days, 16 hours, 4 > minutes and > > 8.256 seconds > > Add the above to the start date of dasa sub period in the Real Time > > Gregorian calendar to get end of dasa sub period, > > (B) We get 11-9-2003 at 1604 hours and 8.256seconds > > > > Note in the above calculations, (A) - (B) = 1 day, 7 hours, 55 > minutes and > > 51.744 seconds > > > > The difference between the date obtained in the 360 days per year > calendar > > and the Real Time Gregorian calendar can NEVER be more than 2 > days. In this > > case, it is a little over one day. Considering that the birth time > can be a > > few minutes off, either way, this can put the dasa sub period start > and end > > dates off by a corresponding few days. So an error of 1 day, 7 > hours > > (something) is negligible and can be overlooked. > > > > Regards. > > > > Vaidun Vidyadhar > > 1 / 94 Marius Street > > Tamworth, NSW 2340 > > Australia > > Tel: 61-2-67 668428 (home) > > Mobile: 0414 870 083 > > Email: <vvidya@o...> vvidya@o... > > > > > > > > > > > > _____ > > > > Rangarajan Krishnamoorthy [ranga@m...] > > Saturday, 12 March 2005 4:19 PM > > > > Dasa Subperiod Calculation > > > > > > > > Dear Members, > > I would like to draw your attention to different ways of performing > > the dasa calculation. > > > > Assume a dasa subperiod starts on 1-1-2000. Assume also that it > > lasts 3.7 years. Let N be the number of days per year (360, 365.25, > > etc.). The problem is to find out the ending date of this > subperiod. > > There are (at least?) three strategies to adopt here. I will show > > the working, assuming N = 360. > > > > Procedure -1: > > ------------- > > 1) Convert the duration into number of days. Since the duration is > > 3.7 years, multiply this by 360. D = 1332 days. > > 2) Add the number of days so arrived at to the starting date. That > > is, add 1332 days to 1 - 1 - 2000. This gives us 25th Aug 2003. > > > > Procedure - 2: > > -------------- > > 1) Add completed (whole) years to the starting date. 2000 + 3 = > > 2003, date is 1 - 1 - 2003 > > 2) Convert fractional year to days. Multiply 0.7 by 360. D = 252 > days > > 3) Add this to (1). 1-1-2003 plus 252 days gives 10th Sept 2003 > > > > Procedure - 3: > > -------------- > > 1) Add completed (whole) years to the starting date. 2000 + 3 = > > 2003, date is 1 - 1 - 2003 > > 2) Convert fractional years to months. Multiply 0.7 by 12. M = 8.4 > > 3) Add completed months to (1). 1-1-2003 plus 8 months gives 1st > > Sept 2003. > > 4) Calculate the average number of days in a month. This comes to > > N/12, i.e., 360/12 = 30. > > 5) Convert the fractional month to days. Multiply 0.4 by 30. This > > comes to 12. > > 6) Add this to (3). The end date comes to 13th Sept 2003 > > > > Thus, for the same " 360 days per year " option, depending on which > of > > the three procedures you follow, the end date is different. > > > > I think we have been debating over the past few days as to which of > > these is appropriate. > > > > Regards, > > Rangarajan > > > > > > > > > > > > > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted March 13, 2005 Report Share Posted March 13, 2005 This discussion of 360 days vs 365.25 days has been carried on in the other . vedic astrology. Ther the definition starts with the day. One sunrise to next sunrise. 360 such days make up the " savan year " . This is called the civil year. The other is the Solar Year. " Souraman " . The months are fixed on Basis of the Sun's entry into each Rashi. Thus months are named as MESHA, Vrishabha, etc. This year naturally has 365.2425 days. In one of the Granthas relied upon, it is advised to use this year only for ududasa (vimsottari dasa). Some Vedic asrtologer's say they are getting better results with Savan Year and an ayanams Laheri-53 minutes . The Savan yaer as such is not in use in any part of the world now. It is the Gregorian Year of 365.2425 days that is universally used. The other is the Pure Lunar Year of about 340 days. The panchangs in India correct this and bring it in line with the solar year, by adding one ADHIKA MASA every 3 years or so. The followers of Islam, do not make any such adjustment. So their years are always less than the Georgian, or Panchang Years. I hope this is of help good luck --- Vaidun Vidyadhar <vvidya wrote: > Dear TW, > > As per Prof KSK, the length of the 360 days/year and 365.2422 days/year are > the same. That is my understanding. It is just that we divide the solar > year by 360 in one case (for ease of calculation) and the 365.2422 in the > other case if one wants to obtain the correct date in the Gregorian > calendar. > > Best regards. > > Vaidun Vidyadhar > 1 / 94 Marius Street > Tamworth, NSW 2340 > Australia > Tel: 61-2-67 668428 (home) > Mobile: 0414 870 083 > Email: <vvidya vvidya > > > > > > _____ > > tw853 [tw853] > Sunday, 13 March 2005 1:51 PM > > Re: Dasa Subperiod Calculation > > > > > Dear Vaidun, > > > In Proceduer -3 explained by Rangarajan, the full 3 years are 365.25 > D/Y and the portion 0.7 is converted by 360 D/Y which is consistent > with Guruji KSK saying " " for convenience and for easy calculation of > sub sub periods 360 " and 1-1-2000 & 10th Sept 2003 dates are > according to Gregorian calender which has been used parctically. > > Best regards, > > tw > > > > > days are taken.---But 365.25 days must be taken " > , " Vaidun Vidyadhar " <vvidya@o...> > wrote: > > Dear Rangarajan, > > > > Procedure - 3 is what Prof KSK taught in his Readers. Following his > > methodology one will get 13 Sep 2003. > > > > The calculation for this is as follows: > > Dasa sub period starts on 1-1-2000 at 0000 hours (midnight) > > Duration of dasa sub period = 3.7 years > > 0.7*360 = 8.4 months > > 0.4*30 = 12 days > > So duration of dasa sub period =3 years, 8 months and 12 days > > Add the above to the start date of dasa sub period to get end of > dasa sub > > period, > > (A) We get 13-9-2003 at 0000 hours (midnight) > > > > It must however be noted that the date indicated above (13-9-2003) > is a date > > in the 360 days per year calendar. > > > > To get the ACTUAL date in the Gregorian calendar, the calculations > will be: > > Dasa sub period starts on 1-1-2000 at 0000 hours (midnight) > > Duration of dasa sub period = 3.7 years > > 0.7*365.2422 = 255.66954 days > > 0.66954*24 = 16.06896 hours > > 0.06896*60 = 4.1376 minutes > > 0.1376*60 = 8.256 seconds > > So duration of dasa sub period =3 years, 255 days, 16 hours, 4 > minutes and > > 8.256 seconds > > Add the above to the start date of dasa sub period in the Real Time > > Gregorian calendar to get end of dasa sub period, > > (B) We get 11-9-2003 at 1604 hours and 8.256seconds > > > > Note in the above calculations, (A) - (B) = 1 day, 7 hours, 55 > minutes and > > 51.744 seconds > > > > The difference between the date obtained in the 360 days per year > calendar > > and the Real Time Gregorian calendar can NEVER be more than 2 > days. In this > > case, it is a little over one day. Considering that the birth time > can be a > > few minutes off, either way, this can put the dasa sub period start > and end > > dates off by a corresponding few days. So an error of 1 day, 7 > hours > > (something) is negligible and can be overlooked. > > > > Regards. > > > > Vaidun Vidyadhar > > 1 / 94 Marius Street > > Tamworth, NSW 2340 > > Australia > > Tel: 61-2-67 668428 (home) > > Mobile: 0414 870 083 > > Email: <vvidya@o...> vvidya@o... > > > > > > > > > > > > _____ > > > > Rangarajan Krishnamoorthy [ranga@m...] > > Saturday, 12 March 2005 4:19 PM > > > > Dasa Subperiod Calculation > > > > > > > > Dear Members, > > I would like to draw your attention to different ways of performing > > the dasa calculation. > > > > Assume a dasa subperiod starts on 1-1-2000. Assume also that it > > lasts 3.7 years. Let N be the number of days per year (360, 365.25, > > etc.). The problem is to find out the ending date of this > subperiod. > > There are (at least?) three strategies to adopt here. I will show > > the working, assuming N = 360. > > > > Procedure -1: > > ------------- > > 1) Convert the duration into number of days. Since the duration is > > 3.7 years, multiply this by 360. D = 1332 days. > > 2) Add the number of days so arrived at to the starting date. That > > is, add 1332 days to 1 - 1 - 2000. This gives us 25th Aug 2003. > > > > Procedure - 2: > > -------------- > > 1) Add completed (whole) years to the starting date. 2000 + 3 = > > 2003, date is 1 - 1 - 2003 > > 2) Convert fractional year to days. Multiply 0.7 by 360. D = 252 > days > > 3) Add this to (1). 1-1-2003 plus 252 days gives 10th Sept 2003 > > > > Procedure - 3: > > -------------- > > 1) Add completed (whole) years to the starting date. 2000 + 3 = > > 2003, date is 1 - 1 - 2003 > > 2) Convert fractional years to months. Multiply 0.7 by 12. M = 8.4 > > 3) Add completed months to (1). 1-1-2003 plus 8 months gives 1st > > Sept 2003. > > 4) Calculate the average number of days in a month. This comes to > > N/12, i.e., 360/12 = 30. > > 5) Convert the fractional month to days. Multiply 0.4 by 30. This > > comes to 12. > > 6) Add this to (3). The end date comes to 13th Sept 2003 > > > > Thus, for the same " 360 days per year " option, depending on which > of > > the three procedures you follow, the end date is different. > > > > I think we have been debating over the past few days as to which of > > these is appropriate. > > > > Regards, > > Rangarajan > > > > > > > > > > > > > > Quote Link to comment Share on other sites More sharing options...
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