Configuring RadScheduler for Canadian Time Zones with New Rules

Updated on Oct 6, 2026

Environment

Product	Scheduler for UI for ASP.NET AJAX
Version	2026.2.708

Description

I want to configure RadScheduler to support the new Canadian time zones, such as BC UTC-7 and Alberta UTC-6, via TimeZoneID so appointments display correctly year-round. The new Canadian time-zone rules affect provinces like British Columbia, Alberta, Northwest Territories, and Manitoba, which will no longer observe daylight saving time starting November 1, 2026. This creates a mismatch with the U.S. time zones where daylight saving time continues to apply.

This knowledge base article also answers the following questions:

• How to handle Canadian time zones in RadScheduler when daylight saving rules no longer match?
• How to assign distinct time zones in RadScheduler for Canadian provinces?
• What to do if Windows does not provide updated time-zone definitions?

Solution

To configure RadScheduler for the new Canadian time zones, follow these steps:

1. Ensure that the Windows server running the application has the latest updates. Microsoft may release new time-zone definitions for the affected Canadian regions.

2. Check for available time zones on the server using the following code:

c#

foreach (TimeZoneInfo timeZone in TimeZoneInfo.GetSystemTimeZones())
{
    Console.WriteLine(timeZone.Id);
}

vb.net

For Each timeZone As TimeZoneInfo In TimeZoneInfo.GetSystemTimeZones()
    Console.WriteLine(timeZone.Id)
Next

3. Once the new Canadian time-zone IDs are available on the server, assign them to RadScheduler.TimeZoneID dynamically during each request in the Page_Init event. Avoid assigning the time zone only when Not IsPostBack is true.

   Example:

   C#

     protected void Page_Init(object sender, EventArgs e)
     {
       string staffId = Profile.StaffID;
       TimeZoneInfoResult result = TimeZone_Staff.RunSelectStatement(staffId);
       RSAppointments.TimeZoneID = result.TimeZone;
   }

   vb.net

   Protected Sub Page_Init(sender As Object, e As EventArgs) Handles Me.Init
       Dim staffId As String = Profile.StaffID
       Dim result As TimeZoneInfoResult = TimeZone_Staff.RunSelectStatement(staffId)
       RSAppointments.TimeZoneID = result.TimeZone
   End Sub

4. Store all appointment times in UTC. RadScheduler will automatically handle time-zone conversions for display and editing.

5. If Microsoft does not provide the updated time-zone definitions in time, use the RadScheduler.TimeZoneOffset property as a temporary workaround for fixed offsets.

   Example for BC (UTC-7):

c#

RadScheduler1.TimeZoneOffset = TimeSpan.FromHours(-7);

vb.net

RadScheduler1.TimeZoneOffset = TimeSpan.FromHours(-7)

This approach is for regions that do not observe daylight saving time and have a fixed offset year-round. It is not suitable for dynamic time zones with changing rules.

6. Avoid using existing TimeZoneID values like "Pacific Standard Time," "Mountain Standard Time," or "Central Standard Time" if their daylight-saving rules do not match the new Canadian regions.

See Also

• RadScheduler Time Zones Documentation
• TimeZoneInfo Class (Microsoft Docs)
• TimeZoneInfo.GetSystemTimeZones() Method (Microsoft Docs)