"Sat, 21 Dec 2024 20:36:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
20:36:39
General datetime
2024-12-21 20:36:39Z
For Database
2024-12-21 20:36:39
For HTTP1.1
Sat, 21 Dec 2024 20:36:39 GMT