"Sat, 04 May 2024 08:54:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240504
Only TIME
08:54:21
General datetime
2024-05-04 08:54:21Z
For Database
2024-05-04 08:54:21
For HTTP1.1
Sat, 04 May 2024 08:54:21 GMT