"Sun, 15 Sep 2024 20:38:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
20:38:00
General datetime
2024-09-15 20:38:00Z
For Database
2024-09-15 20:38:00
For HTTP1.1
Sun, 15 Sep 2024 20:38:00 GMT