"Sun, 21 Apr 2024 22:21:41"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240421
Only TIME
22:21:41
General datetime
2024-04-21 22:21:41Z
For Database
2024-04-21 22:21:41
For HTTP1.1
Sun, 21 Apr 2024 22:21:41 GMT