Rf.Sites.Frame.PeriodOfTimeOutput.monthTimeToAdd C# (CSharp) Метод

    private TimeSpan monthTimeToAdd()
    {
      foreach (var daysInMonth in new[] { 31, 30, 28, 29 })
      {
        var theSpan = TimeSpan.FromDays(daysInMonth);
        if ((pastToPresentCursor + theSpan).Day == pastToPresentCursor.Day)
          return theSpan;
      }
      // can happen when past lies on the last day of a e.g. a 31 day month
      // return a reasonable amount of days
      return TimeSpan.FromDays(30); 
      
    }