"Sun, 15 Dec 2024 03:39:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241215
Only TIME
03:39:19
General datetime
2024-12-15 03:39:19Z
For Database
2024-12-15 03:39:19
For HTTP1.1
Sun, 15 Dec 2024 03:39:19 GMT