"Sun, 15 Dec 2024 03:48:57"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241215
Only TIME
03:48:57
General datetime
2024-12-15 03:48:57Z
For Database
2024-12-15 03:48:57
For HTTP1.1
Sun, 15 Dec 2024 03:48:57 GMT