@tubular/time

Date/time, IANA timezones, leap seconds, TAI/UTC conversions, calendar with settable Julian/Gregorian switchover

v3.9.2 URL: https://unpkg.com/@tubular/time@3.9.2/dist/cjs/index.js

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astronomy calendar date gregorian iana julian leap second moment olson tdt tai time time zone timezone tzdata zoneinfo

@lunisolar/julian

This is a tool for converting Julian Day Number and Gregorian calendar. 儒略日数和公历之间的转换工具

v0.7.1 URL: https://unpkg.com/@lunisolar/julian@0.7.1/dist/index.js

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julian Julian Day Number convertor jdn Gregorian calendar 儒略日格里历公历

jdn-to-date

A npm package for converting Julian Day Number (JDN) to Date object.

v0.1.1 URL: https://unpkg.com/jdn-to-date@0.1.1/index.js

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julian julian day number julian calendar date

moonbeams

Astronomical calculation library

v2.0.3 URL: https://unpkg.com/moonbeams@2.0.3/moonbeams.js

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javascript calendar astronomical calculations date season julian

julian

Convert between Date object and Julian dates used in astronomy and history

v0.2.0 URL: https://unpkg.com/julian@0.2.0/index.js

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julian date conversion epoch time calendar astronomy