"Sun, 21 Jul 2024 14:33:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
14:33:51
General datetime
2024-07-21 14:33:51Z
For Database
2024-07-21 14:33:51
For HTTP1.1
Sun, 21 Jul 2024 14:33:51 GMT