"Sun, 15 Sep 2024 19:50:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
19:50:15
General datetime
2024-09-15 19:50:15Z
For Database
2024-09-15 19:50:15
For HTTP1.1
Sun, 15 Sep 2024 19:50:15 GMT