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C# program to get the ambiguous time offsets (TimeZoneInfo.GetAmbiguousTimeOffsets() Method)

C# TimeZoneInfo.GetAmbiguousTimeOffsets() Method: Here, we are going to learn how to get the ambiguous time offsets in C#.Net?
Submitted by Nidhi, on May 20, 2021

The GetAmbiguousTimeOffsets() method of TimeZoneInfo class is used to get the information about the possible dates & times that an ambiguous date & time can be mapped to.

Syntax:

    TimeSpan [] TimeZoneInfo.GetAmbiguousTimeOffsets(DateTime ambiguousTime);

Parameter(s):

• ambiguousTime: A date and time.

Return value:

This method returns an array of TimeSpan that represent ambiguous offsets.

Exception(s):

• System.ArgumentException

Program:

The source code to get the ambiguous time offsets is given below. The given program is compiled and executed successfully.

using System;
using System.Globalization;
using System.Collections.ObjectModel;

class TimeZoneInfoDemo
{
    //Entry point of Program
    static public void Main()
    {
        DateTime ambiguousTime;

        TimeZoneInfo timeZone1 = TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time");
        TimeZoneInfo timeZone2 = TimeZoneInfo.FindSystemTimeZoneById("UTC");

        ambiguousTime = new DateTime(2007, 11, 4, 1, 0, 0);

        if (timeZone1.IsAmbiguousTime(ambiguousTime))
        {
            Console.WriteLine("Time is ambiguous");

            TimeSpan[] ts = timeZone1.GetAmbiguousTimeOffsets(ambiguousTime);
            Console.WriteLine("Ambiguous time offsets: ");
            foreach (TimeSpan t in ts)
            {
                Console.WriteLine("\t" + t);
            }
        }
        else
            Console.WriteLine("Time is not ambiguous");

        if (timeZone2.IsAmbiguousTime(ambiguousTime))
        {
            Console.WriteLine("Time is ambiguous");

            TimeSpan[] ts = timeZone2.GetAmbiguousTimeOffsets(ambiguousTime);
            Console.WriteLine("Ambiguous time offsets: ");
            foreach (TimeSpan t in ts)
            {
                Console.WriteLine("\t" + t);
            }
        }
        else
            Console.WriteLine("Time is not ambiguous");
    }
}

Output:

Time is ambiguous
Ambiguous time offsets:
        -06:00:00
        -05:00:00
Time is not ambiguous
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