"Sat, 20 Jul 2024 03:38:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240720
Only TIME
03:38:16
General datetime
2024-07-20 03:38:16Z
For Database
2024-07-20 03:38:16
For HTTP1.1
Sat, 20 Jul 2024 03:38:16 GMT