"Sat, 11 May 2024 20:19:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240511
Only TIME
20:19:56
General datetime
2024-05-11 20:19:56Z
For Database
2024-05-11 20:19:56
For HTTP1.1
Sat, 11 May 2024 20:19:56 GMT