Determine minutes until midnight

Question

How would you go about determining how many minutes until midnight of the current day using javascript?

Maybe this post can help you: http://stackoverflow.com/questions/5847165/jquery-get-difference-between-two-dates — Gustavo Barrientos, Dec 21 '11 at 00:24
Midnight according to the client's computer, or according to the server that sent the client the js? — JesseBuesking, Dec 21 '11 at 00:26
@Parson: All the answers below refer to client's midnight. You should calculate server time on the server — Dan, Apr 03 '13 at 17:44

score 16 · Accepted Answer · answered Dec 21 '11 at 00:33

16

function minutesUntilMidnight() {
    var midnight = new Date();
    midnight.setHours( 24 );
    midnight.setMinutes( 0 );
    midnight.setSeconds( 0 );
    midnight.setMilliseconds( 0 );
    return ( midnight.getTime() - new Date().getTime() ) / 1000 / 60;
}

answered Dec 21 '11 at 00:33

Will

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I recommend kennebeck's or RobG's answer. Just not to repeat myself, I'm giving the link with problem explanation: http://stackoverflow.com/a/15792909/139361 – Dan Apr 03 '13 at 17:34
3

consider using `midnight.setHours(24, 0, 0, 0)` – rabudde Jan 27 '15 at 20:22

score 15 · Answer 2 · edited Apr 25 '21 at 12:22

15

Perhaps:

function minsToMidnight() {
  var now = new Date();
  var then = new Date(now);
  then.setHours(24, 0, 0, 0);
  return (then - now) / 6e4;
}

console.log(minsToMidnight());

or

function minsToMidnight() {
  var msd = 8.64e7;
  var now = new Date();
  return (msd - (now - now.getTimezoneOffset() * 6e4) % msd) / 6e4;
}

console.log(minsToMidnight())

and there is:

function minsToMidnight(){
  var d = new Date();
  return (-d + d.setHours(24,0,0,0))/6e4;
}

console.log(minsToMidnight());

or even a one-liner:

minsToMidnight = () => (-(d = new Date()) + d.setHours(24,0,0,0))/6e4;

console.log(minsToMidnight());

edited Apr 25 '21 at 12:22

Konrad Pettersson

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answered Dec 21 '11 at 02:09

RobG

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Why are they all slightly different? – quick007 Apr 21 '22 at 06:23
1

@quick007—because of the time that elapses between clicking the buttons. :-) – RobG Apr 21 '22 at 12:52

kennebec · Answer 3 · 2013-05-09T04:03:09.283

6

You can get the current timestamp, set the hours to 24,

and subtract the old timestamp from the new one.

function beforeMidnight(){
    var mid= new Date(), 
    ts= mid.getTime();
    mid.setHours(24, 0, 0, 0);
    return Math.floor((mid - ts)/60000);
}

alert(beforeMidnight()+ ' minutes until midnight')

edited May 09 '13 at 04:03

answered Dec 21 '11 at 02:00

kennebec

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score 2 · Answer 4 · edited Mar 31 '22 at 13:01

2

Here's a one-liner to get milliseconds until midnight

new Date().setHours(24,0,0,0) - Date.now()

And for the minutes until midnight, we divide that by 60 and then by 1000

(new Date().setHours(24,0,0,0) - Date.now()) / 60 / 1000

edited Mar 31 '22 at 13:01

donohoe

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answered Dec 08 '20 at 18:49

H K

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nullmn · Answer 5 · 2022-08-19T23:16:08.637

Posting this as an alternative solution which works for any hour of the day.

const timeUntilHour = (hour) => {
    if (hour < 0 || hour > 24) throw new Error("Invalid hour format!");

    const now = new Date();
    const target = new Date(now);

    if (now.getHours() >= hour)
        target.setDate(now.getDate() + 1);

    target.setHours(hour);
    target.setMinutes(0);
    target.setSeconds(0);
    target.setMilliseconds(0);

    return target.getTime() - now.getTime();
}

const millisecondsUntilMidnight = timeUntilHour(24);
const minutesUntilMidnight = millisecondsUntilMidnight / (60 * 1000);

Determine minutes until midnight

5 Answers5

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