"Sun, 15 Sep 2024 15:34:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
15:34:20
General datetime
2024-09-15 15:34:20Z
For Database
2024-09-15 15:34:20
For HTTP1.1
Sun, 15 Sep 2024 15:34:20 GMT