"Sat, 20 Apr 2024 18:35:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240420
Only TIME
18:35:04
General datetime
2024-04-20 18:35:04Z
For Database
2024-04-20 18:35:04
For HTTP1.1
Sat, 20 Apr 2024 18:35:04 GMT