"Sun, 15 Dec 2024 20:18:05"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241215
Only TIME
20:18:05
General datetime
2024-12-15 20:18:05Z
For Database
2024-12-15 20:18:05
For HTTP1.1
Sun, 15 Dec 2024 20:18:05 GMT