"Sat, 11 May 2024 20:15:14"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240511
Only TIME
20:15:14
General datetime
2024-05-11 20:15:14Z
For Database
2024-05-11 20:15:14
For HTTP1.1
Sat, 11 May 2024 20:15:14 GMT