"Sun, 18 Aug 2024 22:21:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
22:21:40
General datetime
2024-08-18 22:21:40Z
For Database
2024-08-18 22:21:40
For HTTP1.1
Sun, 18 Aug 2024 22:21:40 GMT