"Sat, 21 Dec 2024 14:43:43"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
14:43:43
General datetime
2024-12-21 14:43:43Z
For Database
2024-12-21 14:43:43
For HTTP1.1
Sat, 21 Dec 2024 14:43:43 GMT