"Sun, 18 Aug 2024 08:44:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
08:44:21
General datetime
2024-08-18 08:44:21Z
For Database
2024-08-18 08:44:21
For HTTP1.1
Sun, 18 Aug 2024 08:44:21 GMT