"Tue, 18 Jun 2024 21:20:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240618
Only TIME
21:20:00
General datetime
2024-06-18 21:20:00Z
For Database
2024-06-18 21:20:00
For HTTP1.1
Tue, 18 Jun 2024 21:20:00 GMT