"Sat, 21 Dec 2024 19:25:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
19:25:56
General datetime
2024-12-21 19:25:56Z
For Database
2024-12-21 19:25:56
For HTTP1.1
Sat, 21 Dec 2024 19:25:56 GMT