"Sat, 20 Jan 2024 06:23:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240120
Only TIME
06:23:13
General datetime
2024-01-20 06:23:13Z
For Database
2024-01-20 06:23:13
For HTTP1.1
Sat, 20 Jan 2024 06:23:13 GMT