Question

112

date-fns | How do I format to UTC

rated 0 times [ 116] [ 4] / answers: 1 / hits: 114451 / 5 Years ago, fri, october 25, 2019, 12:00:00

Problem

It looks like when I use the format() function, it automatically convert the original UTC time into my timezone (UTC+8). I have been digging through their docs for hours and couldn't seem to find a way to default it to UTC time.

import { parseISO, format } from date-fns;



const time = 2019-10-25T08:10:00Z;



const parsedTime = parseISO(time);

console.log(parsedTime); // 2019-10-25T08:10:00.000Z



const formattedTime = format(parsedTime, yyyy-MM-dd kk:mm:ss);

console.log(formattedTime); // 2019-10-25 16:10:00 <-- 8 HOURS OFF!!

I have tried to use the package data-fns-tz and use something like

format(parsedTime, yyyy-MM-dd kk:mm:ss, {timeZone: UTC});

still no luck.

Please help!

Expected Output

2019-10-25 08:10:00

Actual Output

2019-10-25 16:10:00

Answers

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katelynn

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1 Year ago

answered 5 Years ago susanajamiep · Accepted Answer

I would suggest using the built-in Date util:

const date = new Date("2019-10-25T08:10:00Z");

const isoDate = date.toISOString();



console.log(`${isoDate.substring(0, 10)} ${isoDate.substring(11, 19)}`);

Outputs:

2019-10-25 08:10:00

Not a general solution for any format, but no external libraries required.