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How to Override the Guest Time Zone on Your Booking Link

When sharing your booking link, it is important to make sure your guests see your available time slots in the correct time zone for a smooth scheduling experience.

By default, OnceHub displays time slots to guests in their own time zone. You can override this behavior to show those slots in a specific time zone when needed.

Default time zone behavior

Section titled “Default time zone behavior”

By default, OnceHub detects a guest’s time zone based on their IP address. This ensures that a guest opening your link in London sees times in GMT/BST, while a guest in Los Angeles sees times in PDT.

Use case: in-person conferences and events

Section titled “Use case: in-person conferences and events”

Manually overriding the auto-detected time zone is especially useful for avoiding confusion during in-person conferences or regional events. This ensures your guests always see the local time, regardless of where they are booking from.

  • The scenario: Imagine you are hosting a conference in New York, but your attendees are booking their slots while still at home in Los Angeles.
  • The problem: Without overriding the default behavior, an attendee scheduling from Los Angeles will see the schedule in Pacific Time, making an 8:00 AM New York session look like 5:00 AM.
  • The solution: By appending ?iana_time_zone=America/New_York to your booking link, every attendee sees the true event schedule in local New York time, no matter where they are currently located.

How to override the time zone via URL parameters

Section titled “How to override the time zone via URL parameters”

You can make a booking link initially show availability in a specific time zone by adding the iana_time_zone parameter to override the guest’s auto-detected time zone.

For example, if you add ?iana_time_zone=America/New_York to the end of your booking link, the availability shown to guests will default to Eastern Time.

Section titled “Example Link Format”

https://go.oncehub.com/example?iana_time_zone=America/New_York

How to find your IANA time zone value

Section titled “How to find your IANA time zone value”

To use the iana_time_zone parameter, you must use a recognized identifier from the standard public IANA database.

You can find the complete, up-to-date list of valid time zone names by visiting the official IANA Time Zone Database.