9 Jul
2010
9 Jul
'10
3:41 a.m.
I am making a simple symbian app in Python which will take Gregorian
calendar date from user and convert it to Vikram Sanvat /Shak samvat of
Vedic calendar.
unfortunately, the hindu calendar varies much from the our de-facto system
in no. of days in months.
So, I am looking for an algorithm which does it effectively , otherwise, I
will have to write it from scratch which may have some bugs(in dates).
the app first calculates the time in seconds(unix epoch way) then converts
it to gregorian. This info be of help,if any.
More reference here: http://en.wikipedia.org/wiki/Bikram_Samwat
--
Pratik Anand
B.Tech - CSE (3rd year)
Blog: pratik3d.blogspot.com
Twitter: twitter.com/pratikone
9 Jul
9 Jul
4:36 a.m.
On Friday 09 July 2010 03:41:44 Pratik Anand wrote:
unfortunately, the hindu calendar varies much from the
our de-facto system
in no. of days in months.
I tried that once for the tamil calendar, and gave up when I realised that it
follows a 60 year cycle - impossible to capture in an algorithm
--
Regards
Kenneth Gonsalves
Senior Associate
NRC-FOSS at AU-KBC
10:22 a.m.
why not ?
if its cyclical can be captured in algorithm
http://en.wikipedia.org/wiki/Indian_national_calendar
this may help
On Fri, Jul 9, 2010 at 4:36 AM, Kenneth Gonsalves <lawgon(a)au-kbc.org> wrote:
On Friday 09 July 2010 03:41:44 Pratik Anand wrote:
--
SUDHEER K.MUHAMMED
ROOM NO:1511 Nilgiri BARC MUMBAI
MOB:9969513062
unfortunately, the hindu calendar varies much
from the our de-facto
system
in no. of days in months.
I tried that once for the tamil calendar, and gave up when I realised that
it
follows a 60 year cycle - impossible to capture in an algorithm
--
Regards
Kenneth Gonsalves
Senior Associate
NRC-FOSS at AU-KBC
--
http://mm.glug-bom.org/mailman/listinfo/linuxers
11:23 a.m.
On Friday 09 July 2010 10:22:26 sudheer k muhammed wrote:
why not ?
if its cyclical can be captured in algorithm
http://en.wikipedia.org/wiki/Indian_national_calendar
this may help
I am talking about the tamil calendar - I sat with various wise men (this was
before wikipedia was invented and made all of us wise men) and none of them
could give a logical explanation or formula for computing this - apart from
loading the whole 60 year cycle into the formula. So I gave up.
ps. please refrain from top posting
--
Regards
Kenneth Gonsalves
Senior Associate
NRC-FOSS at AU-KBC
10 Jul
10 Jul
1:16 a.m.
On Fri, Jul 9, 2010 at 11:23 AM, Kenneth Gonsalves <lawgon(a)au-kbc.org>wrote;wrote:
On Friday 09 July 2010 10:22:26 sudheer k muhammed
wrote:
well, if something do not have a formula, it can be a database. May be a
insufficient mapping for each and every second with corresponding Brikam
Samvat. It can be hosted somewhere.
just a {\}00B suggestion..
why not ?
if its cyclical can be captured in algorithm
http://en.wikipedia.org/wiki/Indian_national_calendar
this may help
I am talking about the tamil calendar - I sat with various wise men (this
was
before wikipedia was invented and made all of us wise men) and none of them
could give a logical explanation or formula for computing this - apart from
loading the whole 60 year cycle into the formula. So I gave up.
5:41 p.m.
@nsisodiya
But mainintaing a database will require certain checkpoints. Like if we know
at a certain time , the bikram sanvat date was such and such then we can
find dates before and after it upto certain dates. But , that kind of way
won't be useful if I want to find a date in real past or future, say Birth
of Christ in Bikram samvat.
--
Pratik Anand
B.Tech - CSE (3rd year)
Blog: pratik3d.blogspot.com
Twitter: twitter.com/pratikone
7:50 p.m.
On Sat, Jul 10, 2010 at 5:41 PM, Pratik Anand <pratik.preet(a)gmail.com>wrote;wrote:
@nsisodiya
But mainintaing a database will require certain checkpoints.
can you explain more ?
Like if we know
at a certain time , the bikram sanvat date was such and such then we can
find dates before and after it upto certain dates. But , that kind of way
won't be useful if I want to find a date in real past or future, say Birth
of Christ in Bikram samvat.
As, it was told, that it has 60 years cycles. I do not find the difficulty
(logical).
--
┌─────────────────────────┐
│ Narendra Sisodiya
│ http://narendrasisodiya.com
└─────────────────────────┘
8:10 p.m.
@nsisodiya
by your mentioning of databases, i perceived that we can have a stored db of
some imp. dates whose Bikram Samvat dates are known and thus, nearby dates
can be calculated.
and 60 yrs. cycles...well, have to find more on it. have put this one on
hold, till I learn enough fabout unctioning of indian calendars...
--
Pratik Anand
B.Tech - CSE (3rd year)
Blog: pratik3d.blogspot.com
Twitter: twitter.com/pratikone
11 Jul
11 Jul
10:48 a.m.
On Saturday 10 July 2010 19:50:48 narendra sisodiya wrote:
it does not follow what westerners call logic - within the sixty years, wise
men look at the stars and moon and decide what starts when. This was about 20
years ago, so I am hazy about the details, but a concrete example is the month
of Ramazan in the muslim calendar - that ends when a certain designated person
in each part of the world sights the new moon - so at the most a computer
program can predict the date with a margin of error of two days. Multiply that
error by sighting the position of stars etc - better to program a killy.
--
Regards
Kenneth Gonsalves
Senior Associate
NRC-FOSS at AU-KBC
Like if we
know
at a certain time , the bikram sanvat date was such and such then we can
find dates before and after it upto certain dates. But , that kind of way
won't be useful if I want to find a date in real past or future, say
Birth of Christ in Bikram samvat.
As, it was told, that it has 60 years cycles. I do not find the difficulty
(logical).
10:51 a.m.
On Sunday 11 July 2010 10:48:21 Kenneth Gonsalves wrote:
program can predict the date with a margin of error of
two days. Multiply
that error by sighting the position of stars etc - better to program a
killy.
oops, did not realise this was Mumbai lug. Killy is the Tamil word for parrot.
--
Regards
Kenneth Gonsalves
Senior Associate
NRC-FOSS at AU-KBC
9 Jul
9 Jul
11:11 a.m.
On Friday 09 Jul 2010, Pratik Anand wrote:
I am making a simple symbian app in Python which will
take Gregorian
calendar date from user and convert it to Vikram Sanvat /Shak samvat
of Vedic calendar.
With a bit of Googling I managed to find:
http://www.math.nus.edu.sg/aslaksen/projects/lcl.pdf
which goes into calculations in great detail and also has code (I think
in Mathematica) embedded. Apart from that, there are a few links that
may be useful at:
http://www.math.nus.edu.sg/aslaksen/calendar/indian.shtml
And finally, a look at the Astrolog source code may be be able to give
you some insight into the calculations themselves... Astrolog does do a
Vedic chart too, so presumably it can do calculations for Indian
calendars.
I'd appreciate it if you (a) released whatever code you write under a
FOSS licence and (b) kept the list (or at least me) posted on progress
in the app.
Now over to the GPL vs BSD fanatics who will help you decide which
licence to use for your code ;-)
Regards,
-- Raju
--
Raj Mathur raju(a)kandalaya.org http://kandalaya.org/
GPG: 78D4 FC67 367F 40E2 0DD5 0FEF C968 D0EF CC68 D17F
PsyTrance & Chill: http://schizoid.in/ || It is the mind that moves
31 Aug
31 Aug
9:10 p.m.
Hi,
On Fri, Jul 9, 2010 at 3:41 AM, Pratik Anand <pratik.preet(a)gmail.com> wrote:
unfortunately, the hindu calendar varies much from the our de-facto
system
in no. of days in months.
So, I am looking for an algorithm which does it effectively , otherwise, I
will have to write it from scratch which may have some bugs(in dates).
the app first calculates the time in seconds(unix epoch way) then converts
it to gregorian. This info be of help,if any.
Why writing from scratch should be difficult ?
From the wiki link provided by Sudheer:
http://en.wikipedia.org/wiki/Indian_national_calendar
Chaitra 1, 1879 Saka Era, == March 22, 1957
Consider this as your 'epoch'.
1. Calculate no of days from epoch (ndays)
e.g: 31 Aug, 2010 is '19521'
http://www.timeanddate.com/date/durationresult.html?d1=31&m1=08&y1=…
<http://www.timeanddate.com/date/durationresult.html?d1=31&m1=08&y1=2010&d2=22&m2=03&y2=1957>2.
Add 'ndays' to Chaitra 1, 1879 using the Indian calendaring system.
the table gives number of days for each month and conditions for leap
years / leap months are also given.
Both subtraction of dates and adding a duration to date, are standard
exercise problems for first course in C programming.
Regards,
Sourabh
4593
days inactive
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days old
11 comments
6 participants
participants (6)
-
Kenneth Gonsalves -
narendra sisodiya -
Pratik Anand -
Raj Mathur (राज माथुर) -
saurabh daptardar -
sudheer k muhammed