I must change the date format from local time to UTC or ISO as yy:mm:dd H:M, or calculate the difference between local date times with 03:30 as yy:mm:dd H:M
2016-10-22T04:30:00.000Z
convert this to
2016-10-22T01:00:00.000Z
I must change the date format from local time to UTC or ISO as yy:mm:dd H:M, or calculate the difference between local date times with 03:30 as yy:mm:dd H:M
2016-10-22T04:30:00.000Z
convert this to
2016-10-22T01:00:00.000Z
It seems like you're trying to subtract 3 hours and 30 minutes from a Date object and then format it in ISO style. In order to achieve this, you can use the following code snippet.
(No external libraries required)
function updateTime(dateObject, hoursToSubtract, minsToSubtract) {
dateObject.setHours(dateObject.getHours() - hoursToSubtract);
dateObject.setMinutes(dateObject.getMinutes() - minsToSubtract);
}
var originalDate = new Date('2016-10-22T04:30:00.000Z');
updateTime(originalDate, 3, 30);
console.log(originalDate.toISOString());If you're looking to manipulate dates, give datejs a try: . Here's a quick example of how you can use it:
Date.parse('2016-10-22T04:30:00.000Z').addHours(-3).addMinutes(-30).toISOString()
// 2016-10-22T04:30:00.000Z
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