"Sun, 21 Jul 2024 08:37:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
08:37:20
General datetime
2024-07-21 08:37:20Z
For Database
2024-07-21 08:37:20
For HTTP1.1
Sun, 21 Jul 2024 08:37:20 GMT