"Sun, 21 Jul 2024 11:21:44"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
11:21:44
General datetime
2024-07-21 11:21:44Z
For Database
2024-07-21 11:21:44
For HTTP1.1
Sun, 21 Jul 2024 11:21:44 GMT