"Sat, 21 Dec 2024 00:40:35"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
00:40:35
General datetime
2024-12-21 00:40:35Z
For Database
2024-12-21 00:40:35
For HTTP1.1
Sat, 21 Dec 2024 00:40:35 GMT