"Sun, 18 Aug 2024 19:38:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
19:38:39
General datetime
2024-08-18 19:38:39Z
For Database
2024-08-18 19:38:39
For HTTP1.1
Sun, 18 Aug 2024 19:38:39 GMT