"Sun, 18 Aug 2024 08:52:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
08:52:21
General datetime
2024-08-18 08:52:21Z
For Database
2024-08-18 08:52:21
For HTTP1.1
Sun, 18 Aug 2024 08:52:21 GMT