open source panchaanga/ jyotisha projects.

[विश्वासो वासुकिजः (Vishvas Vasuki)]

BCC: A few communities who might be interested in contributing/ using.

CC: Interested people (from earlier email threads)

shrI kArtik (cc-ed) and I have contributed to python project at https://github.com/sanskrit-coders/jyotisha (backed by a pretty big ok events database - https://github.com/sanskrit-coders/adyatithi ).

The code itself is capable of typical (amAnta, chitra-at-180 ayanAMsha, असङ्क्रान्तिमासोऽधिकः ) based calculation (which can be invoked via some shell scripts at https://github.com/karthikraman/panchangam ) as well as the ancient but now uncommon tropical lunisolar system ( https://vvasuki.github.io/jyotiSham/history/kauNDinyAyana/ ) which I prefer.

However, despite recent MAJOR code cleanup/ testing/ structuring efforts, because of (rather unexpected) speed and portability concerns, I favor moving to a better language. I've started a multiplatform-targetted Kotlin project at https://github.com/sanskrit-coders/jyotisha-kotlin . This code will have common panchaanga and utsava computation parts which can be used with platform specific ephemeris code; while reusing the old festival db from https://github.com/sanskrit-coders/adyatithi  . Besides multi-platform targetting, Kotlin was chosen (over say Scala) because of it's good corporate (intellij) support + adaption, simplicity, richer language features (compared to Java). (PS: The compact and popular swiss ephemeris code is ported for use in JVM languages as well.)

You are welcome to contribute to any/ all of the above repos (particularly the jyotisha-kotlin and adyatithi ). Needless to say, everything is open source.

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Vishvas /विश्वासः

[विश्वासो वासुकिजः (Vishvas Vasuki)]

Same folks bcc-ed and cc-ed (plus shrI sammodAchArya).

I Just produced a basic markdown output (richer event markings etc.. pending) - https://github.com/sanskrit-coders/jyotisha/blob/master/output/sahakAra%20nagar%2C%20bengaLUru/SOLSTICE_POST_DARK_10_ADHIKA__CHITRA_AT_180/shaka_year/1942.md showing the tropical-luni-solar kauNDinyAyana calendar . (An ICS calendar file for use with calendar apps is also available in the same location - but does not work with Google calendar, though it works fine with Evolution app on Linux.)

For comparison, the commonplace sidereal-tropical-confusion calendar is at https://github.com/sanskrit-coders/jyotisha/blob/master/output/sahakAra%20nagar%2C%20bengaLUru/MULTI_NEW_MOON_SIDEREAL_MONTH_ADHIKA__CHITRA_AT_180/shaka_year/1942.md .

Please let me know any errors on github (might not receive mailing-list emails at my inbox).

[विश्वासो वासुकिजः (Vishvas Vasuki)]

Same folks bcc-ed and cc-ed .

सङ्केतः परिवर्तितो ज्ञाप्यते - https://sanskrit-coders.github.io/jyotisha/output/ इतीतो लभ्यः।

[विश्वासो वासुकिजः (Vishvas Vasuki)]

Same folks bcc-ed and cc-ed .

Inspired by shrI harSha's (bcc-ed) quiz bots, we now have a telegram channel where a bot sends daily panchaanga message-s (one for kauNDinyAyana system, another for the common sidereal system) for bengaLUru, India - https://t.me/bengaluru_panchaanga . Those interested may subscribe.

Also, in these distributions I've (in a personally maintained event repository) begun to additionally (beyond festivals) mark (mainly as per the Julian and Gregorian calendars) significant events in Hindu history such as the
Tukaram Omble attaining vIrasvarga capturing the maru-rAxasa Ajmal Kasab, paNdit ethnic-cleansing day, the cataclysm at pAnIpat, shivAjI's escape from Agra, capture(s) of panhaLa etc.. Those interested in contributing to it may contact me offline.

[विश्वासो वासुकिजः (Vishvas Vasuki)]

2 groups bcc-ed

At the request of a historian friend, I've dumped historical panchaanga summarie-s (South Indian common computation system used) centered around:

- Hampi 1300s to 1600s

- Pune 1600s to 1800s

- Mysore 1730s to 1950

- Bengaluru 1950 onwards.

It makes it easy to map Gregorian/ Julian / Islamic date to panchAnga dates.

If it aids your research as well, feel free to use it ( https://jyotisham.github.io/jyotisha/output/ ) .

PS: Some paths of calendars sent in prior mails have changed.

[विश्वासो वासुकिजः (Vishvas Vasuki)]

It turns out that a historian Nidhin Olikkara found the software useful in deciphering Tipu Sultan's Mauludi calendar, aiding a correction to his birth date.

Outside paywall here.

Original link here.