How to get first day of current year in javascript?

Question

I need javascript code to get first day of year. e.g. It will be 1st Jan 2013 for this year.

For next year it should be 1st Jan 2014. So basically 1st day of whatever is current year.

answer is here http://stackoverflow.com/questions/8803151/how-to-get-first-day-and-last-day-of-the-week-number-and-year — Popnoodles, Jan 21 '13 at 08:26
Lots of info on the Date() object: http://www.w3schools.com/jsref/jsref_obj_date.asp — Warren R., Jan 21 '13 at 08:29
[`getDay()`](https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Date/getDay) — Ja͢ck, Jan 21 '13 at 08:30
So you basically need to find the year? Because I'm pretty sure 01/01 is always the first day. Unless it's the day of the week you're looking for? — George, Jan 21 '13 at 08:30
var targetDate = new Date(); targetDate.setDate(1); // So you can see the date we have created console.log(targetDate); — Ilyas karim, Jan 27 '18 at 20:41
It's really simple: let date = new Date(new Date().getFullYear(), 0, 1); — Mike Gledhill, Oct 02 '21 at 13:06

Guffa · Answer 1 · 2020-02-23T22:46:16.530

171

Create a new Date instance to get the current date, use getFullYear to get the year from that, and create a Date intance with the year, month 0 (January), and date 1:

var d = new Date(new Date().getFullYear(), 0, 1);

edited Feb 23 '20 at 22:46

answered Jan 21 '13 at 08:31

Guffa

687,336
108
737
1,005

1

This is the best answer. – Michael Paccione May 14 '19 at 09:00
Would you please add a 'var' before 'd'? I cannot edit it because 'var' is only three characters. – Benisburgers Feb 11 '20 at 14:29
2

This solution gives me the last day of the previous year `2019-12-31T23:00:00.000Z`. This gives me the first day: `new Date(new Date().getFullYear(), 0, 1, 1)` – sunwarr10r Oct 09 '20 at 10:18
@WatermelonSugar: The code in the example produces a date in the local time zone, but you show a date in UTC, so the difference may come from how you display the date. – Guffa Oct 12 '20 at 09:35

score 13 · Answer 2 · edited Oct 08 '18 at 08:43

13

var year = 2013;

var date = new Date(year, 0, 1);

console.log(date); // Tue Jan 01 2013 00:00:00 GMT+0100 (Mitteleuropäische Zeit)

You can construct Dates using new Date(YEAR,MONTH,DAY)

So giving the constructor the year you want and the first Day of the First Month, you get your Date Object

Note that the Date Object starts counting with 0 for the Month, so January == 0

edited Oct 08 '18 at 08:43

M.A.K. Ripon

2,070
3
29
47

answered Jan 21 '13 at 08:29

Moritz Roessler

8,542
26
51

Nick · Answer 3 · 2013-01-21T08:31:07.250

5

Try this one:

var timestmp = new Date().setFullYear(new Date().getFullYear(), 0, 1);
var yearFirstDay = Math.floor(timestmp / 86400000);
var day = new Date(yearFirstDay);
alert(day.getDay());

Note: that code returns number, so Sunday is 0, Monday is 1, and so on.

edited Jan 21 '13 at 08:31

answered Jan 21 '13 at 08:26

Nick

602
9
22

score 2 · Answer 4 · answered Jan 21 '13 at 08:27

2

var d = new Date(2013, 0, 1).getDay(); //0 is January for some reason

alert(d);

answered Jan 21 '13 at 08:27

score 0 · Answer 5 · answered Jan 21 '13 at 08:30

0

Check out this fiddle

year = prompt("Enter year : ");

d = new Date(year, 0,1);

var myDays=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"];

alert("First Day is " + myDays[d.getDay()]);

answered Jan 21 '13 at 08:30

Jacob George

2,559
1
16
28

How to get first day of current year in javascript?

5 Answers5