"Sun, 29 Dec 2024 08:21:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241229
Only TIME
08:21:15
General datetime
2024-12-29 08:21:15Z
For Database
2024-12-29 08:21:15
For HTTP1.1
Sun, 29 Dec 2024 08:21:15 GMT