"Sun, 15 Sep 2024 09:35:47"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
09:35:47
General datetime
2024-09-15 09:35:47Z
For Database
2024-09-15 09:35:47
For HTTP1.1
Sun, 15 Sep 2024 09:35:47 GMT