"Sun, 15 Sep 2024 12:40:35"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
12:40:35
General datetime
2024-09-15 12:40:35Z
For Database
2024-09-15 12:40:35
For HTTP1.1
Sun, 15 Sep 2024 12:40:35 GMT