Quantum's interactive calendars, e.g. French Republican Calendar using historic equinox method for leap years.
Pasoonate is a library that includes date time methods and calendars.
A Flutter-first UI toolkit for Myanmar calendar apps
R package to convert lunar to gregorian date
Various online calculation tools for calendars and dates
Chronos is a small software in vbnet which makes it possible to make calculations on the dates and conversions between the republican calendar and the Gregorian calendar.
Convert any Gregorian date to Islamic Hijri, Hebrew, Chinese Lunar, Persian Jalali, and Ethiopian calendars
轻量日历库
Free real-time Bangla date tool – Today's বাংলা তারিখ, English date, Hijri date, Bangla year/month/day, India & Bangladesh time.
A Javascript converter for Jalali (Persian, Shamsi, Khorshidi) calendar and Gregorian calendar
C++20 library for converting between different calendar systems with high-precision arithmetic using Boost multiprecision.
Rest API which is also a swiss knife and to which you can add all the features you want, and like many others, it's a REST API just for experimenting and laughing 🇨🇭🔪...
Custom calendar project
A highly modular C++11 engine for bi-directional Gregorian/Tabular Hijri calendar conversions, absolute date arithmetic, and period overlap analysis. Features dynamic runtime manual offset adjustment with on-disk state persistence to sync variations, constant-time O(1) weekday computation, and robust crash-resilient CLI input validation.
A JavaScript library to convert Gregorian and BC years to the sexagenary cycle in multiple languages
A multilingual Pastafarian calendar toolkit with web and CLI interfaces, plus implementations in JavaScript, C, C++, COBOL, Java, Python and Ruby.
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