"Sun, 18 Aug 2024 12:21:17"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
12:21:17
General datetime
2024-08-18 12:21:17Z
For Database
2024-08-18 12:21:17
For HTTP1.1
Sun, 18 Aug 2024 12:21:17 GMT