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This calendar calculates Vaishnava events and Panjika/Panchang (Hindu calendar) for chosen location. <b>Note:</b> Smartha events/Ekadashis are not supported ! Only Vaishnava events/Ekadashis are supported ! This means that it is not regular Hindu calendar and it is not displaying regular\Smartha Hindu panchanga. Now it calculates 200 Gaurabdas (or 200 years) and displays Purnimanta masas in Gregorian month views. It is based on Shri Navadwipa Panjika and contains 157 main Vaishnava and ISKCO…

This calendar calculates Vaishnava events and Panjika/Panchang (Hindu calendar) for chosen location.
Note: Smartha events/Ekadashis are not supported ! Only Vaishnava events/Ekadashis are supported ! This means that it is not regular Hindu calendar and it is not displaying regular\Smartha Hindu panchanga.
Now it calculates 200 Gaurabdas (or 200 years) and displays Purnimanta masas in Gregorian month views.
It is based on Shri Navadwipa Panjika and contains 157 main Vaishnava and ISKCON events.

Current functionality:

1) Month view shows:
- current day, Tithi
- Ekadashi fasting and Parana (time of breaking the fast)
- Purnima (full moon) and Amavasya (new moon)
- Vaishnava holidays
- as well as my own events (birthdays, etc...)

2) Day view shows:
- Hindu calendar - Panchang/Panjika: Tithi (with end time), Paksha, Nakshatra, Yoga, Karana and Vaara
- Gaurabda, Chandra varsha and year
- Gaudia Vaishnava masa and Purnimanta masa (months)
- Brahma Muhurta
- sunrise and sunset
- noon
- moonrise and moonset
- for Ekadashi vrata days additionally:
-- the time when fasting begins
-- the period of breaking the fast
-- description of Ekadashi
- for Vaishnava holidays additionally:
-- description
-- info about fasting

3) Daylight Saving Time (Summer Time) support for Europe, USA and Australia

4) built-in database of 4,000 cities to select current location

5) follows the rules given by Srila Bhaktisiddhanta Saraswati Thakura in His "Shri Navadwipa Panjika" to cultivate Sri Harinam Kirtan worldwide. "Sri Navadvip Panjika" was designed according to Vaisnava Smriti - "Śrī Hari-bhakti-vilāsa" (by Sanātana Gosvāmī").

6) full support for ISKCON:
Both algorithms of calculating have been implemented:
-- a) using Mayapur city (near Navadvipa, West Bengal, India)
-- b) using the 'Current location'
This means that the calendar implements both standards of ISKCON: before 1990 and after 1990. The first original standard was established by Founder-Acharya of the International Society for Krishna Consciousness, His Divine Grace A. C. Bhaktivedanta Swami Prabhupada, and it was widely used in ISKCON from the beginning to year 1990. This standard uses Shri Mayapur as the location for calculating the day, when Vaishnava events are celebrated all around the world. In 1990 the second standard was proposed: instead of using Shri Mayapur it was advised to use current location.

Notes: Dates, calculated with using 'Current location' option (i.e. using alternative algorithm) correspond with current ISKCON calendar - "Gcal 2011" (Gaurabda Calendar written by Gopalapriya prabhu from ISKCON Bratislava).

7) selectable value of Horizon parameter:
-- a) use Celestial (Astronomical, True) horizon
-- b) use Earth-sky (Visible, Local) horizon
Read more at: https://vaishnavacalendar.blogspot.com/2025/03/horizon.html

8) configurable value of Ayanāṃśaḥ

9) supports only Vaishnava (or Bhagavata) Ekadashi which are Shuddha (pure): an observance is based on the rule that Dasami (the tenth day) during a lunar fortnight should have ended before Arunodaya (96 minutes period before sunrise on the Ekadasi or the 11th day in a lunar fortnight). Note that Smartha Ekadashis are not supported (but available in any Hindi calendar).

10) multi language support: Hindi, Bengali, English, Ukrainian, Portuguese, Spanish, Italian, French, German, Dutch, Russian, Hungarian

11) has feature "Export events" to:
-- Google calendar (with cloud synchronization)
-- Local/Offline calendar (without cloud synchronization)
-- Clipboard (for saving in CSV file and using in MS Outlook, Yahoo or Google further)
How to work: https://youtu.be/w3JUKdV0OEU
"Export to Google Calendar" gives the opportunity to use your favorite Widget or Google Calendar.
""Export to the Clipboard" useful for further use, f.e. saving the list of events to a CSV file and importing it into MS Exchange, Yahoo and other apps.