> Portal Navigation:
> 
> - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version.
> - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages).
> - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`).
> - Top-level index of all portals: https://dev.wix.com/docs/llms.txt
> - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt

## Resource: Time Zones

## Article: Time Zones

## Article Link: https://dev.wix.com/docs/api-reference/business-management/calendar/time-zones.md

## Article Content:

# About Time Zones

Wix Calendars serves as the single source of truth for time zone
calculations. These calculations rely on the
[IANA Time Zone Database](https://www.iana.org/time-zones) and incorporate any
[daylight savings time](https://en.wikipedia.org/wiki/Daylight_saving_time)
adjustments. If your system uses an external time zone database, IANA time zone
rule changes may arrive at different times than they reach Wix.

## Default business time zone

A Wix site’s time zone is determined by the `timeZone` field in the
[Get Site Properties](https://dev.wix.com/docs/rest/business-management/site-properties/properties/get-site-properties.md)
response, which aligns with the primary business address’s time zone. By
default, [schedules](https://dev.wix.com/docs/rest/business-management/calendar/schedules-v3/introduction.md)
and [events](https://dev.wix.com/docs/rest/business-management/calendar/events-v3/introduction.md)
inherit this business time zone. However, you can customize time zone settings
individually for each schedule and event as needed.

## When a business time zone changes

If a business updates its primary address to a location in a different time
zone, the Calendar APIs make these adjustments:

+ All schedules are automatically set to the new time zone.
+ Future events are rescheduled to keep the same local time. For example, if an
  event is scheduled for 8:00 AM in New York and the primary business address
  changes to Seattle, the event is adjusted to 8:00 AM Seattle time, with UTC
  values updated accordingly.

## IANA time zone rule changes

Occasionally, official time zone rules are updated, such as adjustments to
daylight saving time or changes in a region’s standard time. Systems that rely
on these rules need to synchronize with these updates to ensure accurate
scheduling.

You can detect such updates in Wix Calendars by listening to
[Event Updated](https://dev.wix.com/docs/rest/business-management/calendar/events-v3/event-updated.md).
If the event's payload indicates that `event.start.utcDate` or
`event.end.utcDate` has changed while `event.start.localDate` or
`event.end.localDate` remains the same, Wix Calendars has applied an IANA time
zone rule change.

## Display schedules and events in local times

You can retrieve and manage schedules and events while displaying them in a
specific time zone, making it easy to show local times to users in various
regions. Specify the desired `timeZone` in your request, then use the
`adjustedStart` and `adjustedEnd` fields in the response to display the times
in the requested time zone.

## See also

- [Time Zones in Wix Bookings](https://dev.wix.com/docs/rest/business-solutions/bookings/about-time-zones.md)