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