"Sat, 01 Jun 2024 18:15:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240601
Only TIME
18:15:00
General datetime
2024-06-01 18:15:00Z
For Database
2024-06-01 18:15:00
For HTTP1.1
Sat, 01 Jun 2024 18:15:00 GMT