"Sat, 21 Dec 2024 07:38:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
07:38:13
General datetime
2024-12-21 07:38:13Z
For Database
2024-12-21 07:38:13
For HTTP1.1
Sat, 21 Dec 2024 07:38:13 GMT