Burmese Calendar(Myanmar Calendar)

Overview

Gregorian calendar to some Burmese calendar information.

This project is still in progress and is only for my Burmese calendar and astronomy studies.

Please note that it is not guaranteed for use in production.

Demo Calendar : https://phothinmg.github.io/demo-bcal/

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Resources

Burmese Calendar

• The Algorithm for calculation of Burmese Calendar (Myanmar Calendar) and astrological calendar days by Dr. Yan Naing Aye.

• References:

  https://cool-emerald.blogspot.com/2013/06/algorithm-program-and-calculation-of.html

  https://cool-emerald.blogspot.com/2013/12/myanmar-astrological-calendar-days.html

Julian Date and Moon Phases

• A collection of astronomy related programs, algorithms, tutorials, data and implementation of the algorithm from Meeus' Astronomical Algorithms for computing the dates of the phases of the Moon by Greg Miller (gmiller@gregmiller.net).

• Reference: https://www.celestialprogramming.com/

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Node Js

Api docs : https://www.jsdocs.io/package/burmese-calendar

Install

npm i burmese-calendar

yarn add burmese-calendar

pnpm add burmese-calendar

Example Usage for Node js

import { BurmeseCal } from "burmese-calendar"; // esm

const { BurmeseCal } = require("burmese-calendar"); //common js

const bcal = new BurmeseCal();

// Date Time to jd and jdn
const julian = bcal.datetimeToJd({ year: 2025, month: 3, day: 6 ,hour:23,minutes:25,seconds:22}); // { jd: 2460741.475949074, jdn: 2460741 }

// Jd , JDN to Date Time
const dt = bcal.jdToDatetime( 2460741.475949074); //{ year: 2025, month: 3, day: 6, hour: 23, minutes: 25, seconds: 22 }
const dt2 = bcal.jdToDatetime(2460741); //{ year: 2025, month: 3, day: 6, hour: 12, minutes: 0, seconds: 0 }

// gregorian calendar date to julian calendar date
const toj = bcal.calendarConverter({
  ct: "julian",
  year: 2025,
  month: 3,
  day: 6,
}); // { year: 2025, month: 2, day: 21 }
// julian calendar date to gregorian calendar date
const tog = bcal.calendarConverter({
  ct: "gregorian",
  year: 2025,
  month: 3,
  day: 6,
}); // { year: 2025, month: 3, day: 19 }

// getting calendar views
const dv = bcal.dayView({ year: 2025, month: 3, day: 6 });
const mv = bcal.monthView({ year: 2025, month: 3 });
const yv = bcal.yearView({ year: 2025 });

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Browser

jsDelivr : https://www.jsdelivr.com/package/npm/burmese-calendar

<script src="https://cdn.jsdelivr.net/npm/burmese-calendar/cdn/index.min.js"></script>

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C++

bcal.hpp and its dependencies in thetkarit folder , visit here and download thetkarit.zip.

Run example in Linux

Clone git repository , build it using cmake, and run it as follows:

$ git clone https://github.com/phothinmg/burmese-calendar.git
$ cd burmese-calendar
$ mkdir build
$ cd build
$ cmake ..
$ make
$ ./bcal

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