"Sun, 21 Jul 2024 23:21:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
23:21:23
General datetime
2024-07-21 23:21:23Z
For Database
2024-07-21 23:21:23
For HTTP1.1
Sun, 21 Jul 2024 23:21:23 GMT