"Mon, 16 Dec 2024 21:42:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241216
Only TIME
21:42:20
General datetime
2024-12-16 21:42:20Z
For Database
2024-12-16 21:42:20
For HTTP1.1
Mon, 16 Dec 2024 21:42:20 GMT