"Sun, 15 Sep 2024 16:35:11"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
16:35:11
General datetime
2024-09-15 16:35:11Z
For Database
2024-09-15 16:35:11
For HTTP1.1
Sun, 15 Sep 2024 16:35:11 GMT