Unix Timestamp Converter: 1639958400

Just another unix timestamp converter. Find and convert unix epoch time in different date/time formats in timezones. Easy, fast and free unix timestamp lookup. Calc unix timestamps. Search for unix time. Unixtime examples. Learn important timestamps.

Unix Timestamp Converter: 1639958400

2021-12-20 00:00:00 UTC

• Day of Year: 353
• Week of Year: 51
• Month: December (31 Days)
• Weekday: Monday (Day 1)
• Leap Year: No

Local Time for 1639958400

What is this timestamp in your local timezone? Just choose a timezone from the dropdown list.

2021-12-20 00:00:00 UTC

Summertime / Daylight Saving Time (DST): No

Relative to 1639958400

Some important unix timestamps relative to 1639958400 (2021-12-20 00:00:00 UTC) with offsets in seconds. Dates, times and offsets are described from the UTC timezone.

Convert Timestamp Programming Languages

$dt = new Datetime('{{ $timestamp }}');
echo $dt->format('r');

select from_unixtime(table.fieldname);

let dt = new Date(1639958400 * 1000); // JS works with milliseconds
console.log(dt.toUTCString());

from datetime import datetime
print(datetime.utcfromtimestamp(1639958400).strftime('%c'))

java.util.Date dt = new java.util.Date((long) 1639958400 * 1000);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSXXX");
System.out.println(sdf.format(dt));

DateTimeOffset dt = DateTimeOffset.FromUnixTimeSeconds(1639958400);
dt.ToString("F")

=((((A1+0)/60)/60)/24)+DATE(1970,1,1);