"Sat, 01 Jun 2024 20:21:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240601
Only TIME
20:21:15
General datetime
2024-06-01 20:21:15Z
For Database
2024-06-01 20:21:15
For HTTP1.1
Sat, 01 Jun 2024 20:21:15 GMT