"Sun, 29 Dec 2024 20:39:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241229
Only TIME
20:39:15
General datetime
2024-12-29 20:39:15Z
For Database
2024-12-29 20:39:15
For HTTP1.1
Sun, 29 Dec 2024 20:39:15 GMT