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TimeZoneInfo.BaseUtcOffset Property

  • Reference

Definition

Namespace:
System
Assembly:
System.Runtime.dll
Assembly:
System.Core.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll
Source:
TimeZoneInfo.cs
Source:
TimeZoneInfo.cs
Source:
TimeZoneInfo.cs

Gets the time difference between the current time zone's standard time and Coordinated Universal Time (UTC).

public:
 property TimeSpan BaseUtcOffset { TimeSpan get(); };
public TimeSpan BaseUtcOffset { get; }
member this.BaseUtcOffset : TimeSpan
Public ReadOnly Property BaseUtcOffset As TimeSpan

Property Value

TimeSpan

An object that indicates the time difference between the current time zone's standard time and Coordinated Universal Time (UTC).

Examples

The following example uses the BaseUtcOffset property to display the difference between the local time and Coordinated Universal Time (UTC).

TimeZoneInfo localZone = TimeZoneInfo.Local;
Console.WriteLine("The {0} time zone is {1}:{2} {3} than Coordinated Universal Time.",  
                  localZone.DisplayName, 
                  Math.Abs(localZone.BaseUtcOffset.Hours), 
                  Math.Abs(localZone.BaseUtcOffset.Minutes), 
                  (localZone.BaseUtcOffset >= TimeSpan.Zero) ? "later" : "earlier");

let localZone = TimeZoneInfo.Local
printfn $"""The {localZone.DisplayName} time zone is {abs localZone.BaseUtcOffset.Hours}:{abs localZone.BaseUtcOffset.Minutes} {if localZone.BaseUtcOffset >= TimeSpan.Zero then "later" else "earlier"} than Coordinated Universal Time."""

Dim localZone As TimeZoneInfo = TimeZoneInfo.Local
Console.WriteLine("The {0} time zone is {1}:{2} {3} than Coordinated Universal Time.", _ 
                  localZone.StandardName, _
                  Math.Abs(localZone.BaseUtcOffset.Hours), _
                  Math.Abs(localZone.BaseUtcOffset.Minutes), _
                  IIf(localZone.BaseUtcOffset >= TimeSpan.Zero, "later", "earlier"))

Remarks

The time span returned by the BaseUtcOffset property can range from 14 hours (for a time zone that is 14 hours ahead of Coordinated Universal Time (UTC)) to -14 hours (for a time zone that is 14 hours behind UTC). Time zones that are ahead of UTC have a positive offset; time zones that are behind UTC have a negative offset.

The BaseUtcOffset value is represented as a whole number of minutes. It cannot include a fractional number of minutes.

Note

Because BaseUtcOffset is a property of the TimeZoneInfo object rather than the TimeZoneInfo.AdjustmentRule object, the TimeZoneInfo class applies a single offset from UTC to all of a time zone's adjustments. To reflect a time zone that has modified its offset from UTC, you must create a new time zone using the CreateCustomTimeZone method.

The BaseUtcOffset property differs from the GetUtcOffset method in the following ways:

  • The BaseUtcOffset property returns the difference between UTC and the time zone's standard time; the GetUtcOffset method returns the difference between UTC and the time zone's time at a particular point in time.

  • The GetUtcOffset method reflects the application of any adjustment rules to the time zone; the BaseUtcOffset property does not.

Applies to

See also