"Mon, 16 Dec 2024 08:21:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241216
Only TIME
08:21:15
General datetime
2024-12-16 08:21:15Z
For Database
2024-12-16 08:21:15
For HTTP1.1
Mon, 16 Dec 2024 08:21:15 GMT