using System;

DateTime date = new(89, 3, 12, 12, 43, 34);

DateTime date2 = new(89, 3, 12, 11, 22, 12);

DateOnly d1 = new(date.Year, date.Month , date.Day);

DateOnly d2 = new(date2.Year, date2.Month , date2.Day);

Console.WriteLine(date == date2);

Console.WriteLine(d1 == d2);    

​

//https://stackoverflow.com/a/79547454/221800