What is the Unix Time Stamp?
The Unix Time (also known as Epoch Time, Posix Time, seconds since the Epoch, or UNIX Epoch time) is a technique to indicate about a point in time. It can be a number of seconds between particular date time and that have passed since 1 January 1970 at Coordinated Universal Time (UTC). So the Epoch is Unix time 0 (1-1-1970) but it is also used as Unix Time or Unix Timestamp. There are many Unix Systems that stored the description of Unix time is as a signed 32-bit integer, the description will end after the completion of seconds from 1 January 1970, which will happen at 3:14:08 UTC on 19 January 2038. This is called as the Year 2038 problem, where the 32-bit signed Unix time will overflow and will take the actual count to negative.
Here is a list of time measures from Epoch Time:
| Seconds |
Minutes |
Hours |
Readable time |
| 60 |
1 |
0.016667 |
1 minute |
| 3600 |
60 |
1 |
1 hour |
| 86400 |
1440 |
24 |
1 day |
| 604800 |
10080 |
168 |
1 week |
| 2629744 |
43829.0667 |
730.4844 |
1 month (30.44 days) |
| 31556926 |
525948.767 |
8765.813 |
1 year (365.24 days) |
Convert from Human-Readable date/time to Epoch/Timestamp
| PHP |
strtotime parses most English language date texts to epoch/Unix Time.
echo strtotime("26 April 2024");
// ... or ...
echo strtotime("2024/04/26");
// ... or ...
echo strtotime("+10 days"); // 10 days from now
// object oriented
$date = new DateTime('04/26/2024'); // format: MM/DD/YYYY
echo $date->format('U');
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| JavaScript |
var myDate = new Date("July 1, 1978 02:30:00"); // Your timezone!
var myEpoch = myDate.getTime()/1000.0;
document.write(myEpoch);
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| Perl |
use Time::Local;
$time = timelocal($sec,$min,$hours,$day,$month,$year);
Read More... |
| Python |
import calendar, time; calendar.timegm(time.strptime('2024-26-04 11:04:36', '%Y-%m-%d %H:%M:%S'))
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Convert from Epoch/Timestamp to Human-Readable date/time
| PHP |
$epoch = 1714195536;
$dt = new DateTime("@$epoch"); // convert UNIX timestamp to PHP DateTime
echo $dt->format('Y-m-d H:i:s'); // output = 2024-04-26 23:25:36 Read More... |
| JavaScript |
var myDate = new Date("July 1, 1978 02:30:00"); // Your timezone!
var myEpoch = myDate.getTime()/1000.0;
document.write(myEpoch);
Read More... |
| Perl |
use Time::Local;
$time = timelocal($sec,$min,$hours,$day,$month,$year);
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| Python |
import time; time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.localtime(epoch)) Replace
time.localtime with time.gmtime for GMT time. Or using datetime: import datetime; datetime.datetime.utcfromtimestamp(epoch).replace(tzinfo=datetime.timezone.utc)
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