"Tue, 18 Jun 2024 20:21:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240618
Only TIME
20:21:04
General datetime
2024-06-18 20:21:04Z
For Database
2024-06-18 20:21:04
For HTTP1.1
Tue, 18 Jun 2024 20:21:04 GMT