"Sun, 18 Aug 2024 04:15:38"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
04:15:38
General datetime
2024-08-18 04:15:38Z
For Database
2024-08-18 04:15:38
For HTTP1.1
Sun, 18 Aug 2024 04:15:38 GMT