API.TransitManager.MakeRelativeScheduleWithinCutoff C# (CSharp) Метод

        private static IEnumerable<int> MakeRelativeScheduleWithinCutoff(BusStopRouteDaySchedule daySchedule, DateTimeOffset currentTime)
        {
            // Is there a better condition for this, i.e. involving a check whether there are 24hr+ time spans in the schedule?
            var timeOfDay = daySchedule.Days == DaysOfWeek.NightOwl &&
                currentTime.TimeOfDay.Hours < 4
                ? currentTime.TimeOfDay.Add(TimeSpan.FromDays(1))
                : currentTime.TimeOfDay;

            var scheduleCutoff = timeOfDay.Add(TimeSpan.FromMinutes(20));

            return daySchedule.Times.Where(ts => ts > scheduleCutoff)
                .Select(ts => (int)ts.Subtract(timeOfDay).TotalMinutes);
        }