"Sun, 15 Sep 2024 15:27:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
15:27:45
General datetime
2024-09-15 15:27:45Z
For Database
2024-09-15 15:27:45
For HTTP1.1
Sun, 15 Sep 2024 15:27:45 GMT