Difference between date in February and March 2021

I'm trying to get the difference between the below dates, but the result is 44min 50sec. Am I doing something wrong?

         //time_machine: ^0.9.15

          final start = LocalDateTime(2021, 2, 27, 4, 23, 4);
          final end = LocalDateTime(2021, 3, 1, 5, 7, 54);