"Sun, 22 Dec 2024 17:15:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241222
Only TIME
17:15:12
General datetime
2024-12-22 17:15:12Z
For Database
2024-12-22 17:15:12
For HTTP1.1
Sun, 22 Dec 2024 17:15:12 GMT