Calendar data and coverage

Name: Nepali calendar dataset 2083.1
Creator: Nepali almanac sources
License: Proprietary — see ATTRIBUTION.md. Redistributed for reference use with attribution; not relicensed.

This calendar covers 36,891 days from BS 2000 to BS 2100 (1943-04-14 to 2044-04-13 AD), with 3,357 recorded festivals, holidays and observances.

Dataset 2083.1, schema 1, content hash b705558d9fdf0726.

Source

Calendar data, festivals, holidays and panchanga compiled from published Nepali almanac sources.

Proprietary — see ATTRIBUTION.md. Redistributed for reference use with attribution; not relicensed.

Bikram Sambat month lengths are published year by year by the Nepal Panchanga Nirnayak Samiti; the table used by the date core is transcribed from this source.

What is covered, and what is not

BS ↔ AD dates and holiday flags: BS 2000–2100
Festivals and events: BS 2007–2083
Panchanga (tithi, nakshatra, yoga, karana): BS 2079–2083
Sunrise, sunset, moonrise, moonset: BS 2079–2083
Auspicious dates (साइत): BS 2081–2083
Distinct named events: 935

Outside those windows this calendar shows nothing rather than filling the gap with an estimate. A day outside the event window still has its two dates and its weekday.

Versioning and updates

Dataset version: 2083.1
Schema version: 1
Last updated data: 2026-08-14
Dataset built: 2026-09-07

The dataset is versioned separately from the application, as BS_YEAR.REVISION. Every rebuild is validated for duplicate dates, missing dates, impossible month lengths and BS↔AD disagreement, and is compared against the previous dataset before publication — a build that would remove a date fails.