"Sun, 15 Dec 2024 23:45:27"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241215
Only TIME
23:45:27
General datetime
2024-12-15 23:45:27Z
For Database
2024-12-15 23:45:27
For HTTP1.1
Sun, 15 Dec 2024 23:45:27 GMT