使用 moment 基于时区将字符串日期和时间转换为 UTC

Question

am using moment in nodejs server to convert local time from frontend to utc.

my time format is date = '10-07-2020 08:45 PM' in string format. When i use moment(date).format() its converting format to this 2020-10-07 20:45:00+05:30 timezone is adding based on server and i have timezone = '+4:00' this is my local timezone. I would like to convert my date string to UTC based on the timezone field not based on the server timezone. How can I do this?

I tried the following methods but am not getting a proper solution

moment.utc(moment(date).utcOffset(timezone)).format('YYYY-MM-DD HH:mm:ss')

Anyone Please suggest

Answer 1

You can use moment-timezone to create a date from a string and a certain timezone. In order to do that you need to specify your format and the corresponding timezone. Something like this:

 const date = moment.tz("10-07-2020 08:45 pm", "MD-YYYY hh:mm a", "Europe/Samara"); console.log(date.toISOString());

 <script src="https://momentjs.com/downloads/moment.min.js"></script> <script src="https://momentjs.com/downloads/moment-timezone-with-data.min.js"></script>

Answer 2

Instead of moment, perhaps use intl DateTimeFormat ?

Here are some possibilities

 const options = { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric', hour: 'numeric', minute: 'numeric', second: 'numeric', }; const date = new Date('10-07-2020 08:45 PM') console.log(date) options.timeZone = 'Europe/Ulyanovsk'; options.timeZoneName = 'short'; console.log(new Intl.DateTimeFormat('en-US', options).format(date));