"Sun, 21 Jul 2024 08:39:44"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
08:39:44
General datetime
2024-07-21 08:39:44Z
For Database
2024-07-21 08:39:44
For HTTP1.1
Sun, 21 Jul 2024 08:39:44 GMT