"Sun, 15 Sep 2024 16:38:47"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
16:38:47
General datetime
2024-09-15 16:38:47Z
For Database
2024-09-15 16:38:47
For HTTP1.1
Sun, 15 Sep 2024 16:38:47 GMT