gps-time

    1.0.8 • Public • Published

    gps-time.js

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    Small utility to convert times between GPS epoch (midnight January 6, 1980) and Unix epoch (midnight January 1, 1970), taking into account leap seconds.

    It's not such a trivial matter as adding a constant number of leap seconds to all time inputs! For any two times, a different number of leap seconds may have elapsed between them. This utility helps figure out exactly how many have elapsed.

    No dependencies! Very small: 464 bytes gzipped.

    Works on the client and on the server (in Node.js).

    Node.js installation

    npm i --save gps-time

    Usage

    AMD and CommonJS are supported, with a fallback that defines this utility at window.gpsTime

    In Node, you can bring in this utility with this:

    var gpsTime = require('gps-time');

    Converting from Unix time to GPS time.

    var unixMS = Date.now();  // 1454168480000
    gpsTime.toGPSMS(unixMS);  // 1138203697000

    Converting from GPS time to Unix time.

    var gpsMS = 1138203697000;
    gpsTime.toUnixMS(gpsMS);  // 1454168480000

    Tests

    This comes with a small test suite which can be run like this:

    $ npm install --dev
    $ npm test
    

    License

    Licenced under MIT

    Install

    npm i gps-time

    DownloadsWeekly Downloads

    302

    Version

    1.0.8

    License

    MIT

    Unpacked Size

    12.8 kB

    Total Files

    7

    Last publish

    Collaborators

    • davidcalhoun