"Sun, 18 Aug 2024 16:36:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
16:36:20
General datetime
2024-08-18 16:36:20Z
For Database
2024-08-18 16:36:20
For HTTP1.1
Sun, 18 Aug 2024 16:36:20 GMT