"Sat, 20 Jul 2024 05:21:38"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240720
Only TIME
05:21:38
General datetime
2024-07-20 05:21:38Z
For Database
2024-07-20 05:21:38
For HTTP1.1
Sat, 20 Jul 2024 05:21:38 GMT