"Sun, 18 Aug 2024 02:21:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
02:21:39
General datetime
2024-08-18 02:21:39Z
For Database
2024-08-18 02:21:39
For HTTP1.1
Sun, 18 Aug 2024 02:21:39 GMT