Week refers to the week of the month, with "5" meaning the last week. : TimeZoneInfo « Development Class « C# / C Sharp

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C# / C Sharp » Development Class » TimeZoneInfoScreenshots 
Week refers to the week of the month, with "5" meaning the last week.
 

using System;
using System.Globalization;
public class MainClass {
    public static void Main() {
        TimeZoneInfo wa = TimeZoneInfo.FindSystemTimeZoneById("W. Australia Standard Time");

        foreach (TimeZoneInfo.AdjustmentRule rule in wa.GetAdjustmentRules()) {
            Console.WriteLine("Rule: applies from " + rule.DateStart +
                                              " to " + rule.DateEnd);

            Console.WriteLine("   Delta: " + rule.DaylightDelta);

            Console.WriteLine("   Start: " + FormatTransitionTime
                                             (rule.DaylightTransitionStart, false));

            Console.WriteLine("   End:   " + FormatTransitionTime
                                             (rule.DaylightTransitionEnd, true));
            Console.WriteLine();
        }
    }
    static string FormatTransitionTime(TimeZoneInfo.TransitionTime tt,
                                    bool endTime) {
        if (endTime && tt.IsFixedDateRule
                    && tt.Day == && tt.Month == 1
                    && tt.TimeOfDay == DateTime.MinValue)
            return "-";

        string s;
        if (tt.IsFixedDateRule)
            s = tt.Day.ToString();
        else
            s = "The first second third fourth last".Split()[tt.Week - 1+
                " " + tt.DayOfWeek + " in";

        return s + " " + DateTimeFormatInfo.CurrentInfo.MonthNames[tt.Month - 1]
                 " at " + tt.TimeOfDay.TimeOfDay;
    }
}

 
Related examples in the same category
1.The Id property corresponds to the value passed to FindSystemTimeZoneById.
2.The TimeZoneInfo class works in a similar manner. TimeZoneInfo.Local returns the current local time zone:
3.TimeZoneInfo also provides IsDaylightSavingTime and GetUtcOffset methods--the difference is that they accept either a DateTime or DateTimeOffset.
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