"Sun, 18 Aug 2024 09:21:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
09:21:36
General datetime
2024-08-18 09:21:36Z
For Database
2024-08-18 09:21:36
For HTTP1.1
Sun, 18 Aug 2024 09:21:36 GMT