mirror of https://github.com/therootcompany/tz.js
27 lines
707 B
JavaScript
27 lines
707 B
JavaScript
/**
|
|
* take a date of assumed timezone and convert to utc
|
|
*
|
|
* @param {*} d
|
|
* @param {*} tz
|
|
* @returns
|
|
*/
|
|
function tzUTC(d, tz) {
|
|
// first calculate tz difference
|
|
var date = new Date();
|
|
var options = {
|
|
year: 'numeric',
|
|
month: 'numeric',
|
|
day: 'numeric',
|
|
hour: 'numeric',
|
|
minute: 'numeric',
|
|
second: 'numeric',
|
|
hour12: false,
|
|
timeZone: tz
|
|
};
|
|
var tzDate = new Intl.DateTimeFormat('en-US', options).format(date)
|
|
var diff = date - new Date(tzDate);
|
|
var minutes = Math.floor((diff / 1000) / 60);
|
|
var localTime = new Date(d);
|
|
localTime.setMinutes(d.getMinutes() + minutes);
|
|
return localTime.toUTCString();
|
|
} |