"Sun, 18 Aug 2024 05:09:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
05:09:15
General datetime
2024-08-18 05:09:15Z
For Database
2024-08-18 05:09:15
For HTTP1.1
Sun, 18 Aug 2024 05:09:15 GMT