Small js lib with a few functions to handel date and time with timezones using unixtimestamps as a base.

The basic idéa is that you use unixtimestamps in UTC as base. Then you set what timezone offset you want to use for outputing. This will be set globaly.

// Offset in hours
setTimezoneOffset(1); // UTC + 1 hour

const unixtime = 1576170268;

console.log(formatTimestamp(unixtime));
// Expected output:  2019-12-12 18:04:28

console.log(formatTimestamp(unixtime, '%y%m%d - %H:%I'));
// Expected output:  191212 - 18:04

console.log(toUnixtime('2019-12-12 18:04:28'));
// Expected output: 1576170268

formatTimestamp's second parameter uses syntax similar to strftime but all functionallity is not implemented.

• No support for daylight-saving time, you have to handel this on your own since you don't input timezone but timezone offset.
• formatTimestamp is not fullfeatured for formatting

If you find that something is missing or wrong please submit a pull request. Please keep in mind that this is intended to be lightweight.