"Sun, 15 Sep 2024 02:50:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
02:50:20
General datetime
2024-09-15 02:50:20Z
For Database
2024-09-15 02:50:20
For HTTP1.1
Sun, 15 Sep 2024 02:50:20 GMT