"Sat, 11 May 2024 14:38:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240511
Only TIME
14:38:03
General datetime
2024-05-11 14:38:03Z
For Database
2024-05-11 14:38:03
For HTTP1.1
Sat, 11 May 2024 14:38:03 GMT