"Sun, 15 Sep 2024 18:26:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
18:26:45
General datetime
2024-09-15 18:26:45Z
For Database
2024-09-15 18:26:45
For HTTP1.1
Sun, 15 Sep 2024 18:26:45 GMT