"Sat, 21 Dec 2024 03:13:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
03:13:13
General datetime
2024-12-21 03:13:13Z
For Database
2024-12-21 03:13:13
For HTTP1.1
Sat, 21 Dec 2024 03:13:13 GMT