"Sun, 19 May 2024 20:20:09"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240519
Only TIME
20:20:09
General datetime
2024-05-19 20:20:09Z
For Database
2024-05-19 20:20:09
For HTTP1.1
Sun, 19 May 2024 20:20:09 GMT