"Sun, 18 Aug 2024 16:23:38"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
16:23:38
General datetime
2024-08-18 16:23:38Z
For Database
2024-08-18 16:23:38
For HTTP1.1
Sun, 18 Aug 2024 16:23:38 GMT