Dynamically convert timestamp to a different timezone

Question

I am using moment.js and moment-timezone. how can I create a function to convert 2016-06-12 06:22:18 UTC time to the user's timezone time and then format the time to Jun 12, 2015 6:22 PM

for example:

updateTime("2016-06-12 06:22:18");

if in chicago, the output will be:

"Jun 12, 2016, 1:22 AM"

s7vr · Accepted Answer · 2016-06-20T05:40:30.343

1

You can try something like this.

moment.utc("2016-06-12 06:22:18", "YYYY-MM-DD HH:mm:ss").tz('America/Chicago').format("MMM D, YYYY, hh:mm a")

edited Jun 20 '16 at 05:40

answered Jun 20 '16 at 05:35

s7vr

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Seemingly he wants the time to be localized for any user, so tz('America/Chicago') should be replaced with local() – akardon Jun 20 '16 at 05:48
What does the "a" at the end mean in `format("MMM D, YYYY, hh:mm a")`? – johnjay22113 Jun 20 '16 at 05:50
@akazemis local() does not work – johnjay22113 Jun 20 '16 at 05:51
also ,any way to write a function i can call each time? – johnjay22113 Jun 20 '16 at 05:52
'a' is a marker for AM/PM. – s7vr Jun 20 '16 at 05:55
@ShivV Okay, also can you update answer if function? is it possible to add: for seconds, show `a few seconds ago`. for minutes: `a few minutes ago` and `one hour ago`? – johnjay22113 Jun 20 '16 at 05:57
1

@johnjay22113 local() works, have a look into JSFiddle I've made : https://jsfiddle.net/1jm73out/ – akardon Jun 20 '16 at 06:06
'a' at the end is for am/pm by the way – akardon Jun 20 '16 at 06:07
@akazemis yes local() works but what does it do? what's the difference between local() and moment.tz.guess()? – johnjay22113 Jun 20 '16 at 06:09
2

@johnjay22113 if you're using moment.tz.guess() it's no different from local(), I said that regarding to Shiv V's code that says .tz('America/Chicago') which is kind of hard-coded – akardon Jun 20 '16 at 06:19
you can find the method I suggested in my answer – akardon Jun 20 '16 at 06:20
@akazemis, okay thanks! – johnjay22113 Jun 20 '16 at 06:27
They are quite different. `local()` uses the browser's own time zone awareness built into the `Date` object. `moment.tz.guess()` will try to guess the time zone, but could certainly guess incorrectly. – Matt Johnson-Pint Jun 20 '16 at 07:38

akardon · Answer 2 · 2016-06-20T06:08:48.993

0

The function you need would be like this :

function getLocalDate (input)
{
  var dt= moment.utc(input);
  dt.add(moment().utcOffset(),'minutes');
  return moment(dt).format('MMM D, YYYY, hh:mm a');
};

Or this :

function getLocalDate(input)
{
  return moment.utc(input).local().format('MMM D, YYYY, hh:mm a');
};

edited Jun 20 '16 at 06:08

answered Jun 20 '16 at 05:40

akardon

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score 0 · Answer 3 · answered Jun 20 '16 at 05:42

Hey this links may help you

https://gist.github.com/founddrama/2182389

https://www.sitepoint.com/managing-dates-times-using-moment-js/

http://momentjs.com/timezone/docs/

Examples:

moment().format('MMMM Do YYYY, h:mm:ss a'); // June 20th 2016, 11:10:20 am
moment().format('dddd');                    // Monday
moment().format("MMM Do YY");               // Jun 20th 16
moment().format('YYYY [escaped] YYYY');     // 2016 escaped 2016
moment().format();                       
moment.tz('2016-01-01', 'America/Chicago').format('z');

score 0 · Answer 4 · edited May 23 '17 at 10:30

0

You might want to look at this answer, perhaps: Get current timestamp from specific timezone

They solved by taking the time in UTC and converting it in the specific time

var utcEpochSeconds = dateObj.getTime() + (dateObj.getTimezoneOffset() * 60000);

edited May 23 '17 at 10:30

Community

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answered Jun 20 '16 at 05:46

Adriano

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Dynamically convert timestamp to a different timezone

4 Answers4