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## Resource: Introduction

## Article: Introduction

## Article Link: https://dev.wix.com/docs/api-reference/business-management/calendar/schedule-time-frames-v3/introduction.md

## Article Content:

# About the Schedule Time Frames API

The Schedule Time Frames API allows you to keep track of when
[schedules](https://dev.wix.com/docs/rest/business-management/calendar/schedules-v3/introduction.md)
start and end.

With the Schedule Time Frames API, you can:

+ Retrieve schedule time frames.
+ Track in real-time when a schedule time frame is updated.

For example, [Wix Bookings](https://dev.wix.com/docs/rest/business-solutions/bookings/about-wix-bookings.md)
uses the Schedule Time Frames API to determine when
[courses](https://dev.wix.com/docs/rest/business-solutions/bookings/terminology.md#course)
start and end.

For more in-depth scheduling management, see:

+ [Schedules API](https://dev.wix.com/docs/rest/business-management/calendar/schedules-v3/introduction.md)
+ [Events API](https://dev.wix.com/docs/rest/business-management/calendar/events-v3/introduction.md)

## Before you begin

It’s important to note the following points before starting to code:

+ You can't update a schedule time frame. You can retrieve it and get notified in real-time when it's modified.

## Terminology

+ **Schedule time frame**: Defines the first and last [event](https://dev.wix.com/docs/rest/business-management/calendar/events-v3/introduction.md)
  dates within a schedule and indicates whether any events recur indefinitely.
+ **Recurring event**: Event that repeats based on a pattern defined by a
  recurrence rule. For example, weekly yoga classes or regular staff working
  hours. Recurring events can either end on a specified date or continue
  indefinitely. Learn more about
  [recurring events](https://dev.wix.com/docs/rest/business-management/calendar/events-v3/recurring-events.md).

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