"Sat, 29 Jun 2024 15:36:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240629
Only TIME
15:36:00
General datetime
2024-06-29 15:36:00Z
For Database
2024-06-29 15:36:00
For HTTP1.1
Sat, 29 Jun 2024 15:36:00 GMT