"Sun, 31 Mar 2024 22:21:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240331
Only TIME
22:21:00
General datetime
2024-03-31 22:21:00Z
For Database
2024-03-31 22:21:00
For HTTP1.1
Sun, 31 Mar 2024 22:21:00 GMT