"Tue, 18 Jun 2024 19:40:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240618
Only TIME
19:40:04
General datetime
2024-06-18 19:40:04Z
For Database
2024-06-18 19:40:04
For HTTP1.1
Tue, 18 Jun 2024 19:40:04 GMT