# Date Library

> FullCalendar v6 documentation, for an old release. Web version: https://legacy.fullcalendar.io/v6/date-library
>
> Latest version (v7): https://fullcalendar.io/docs/date-library.md

## Articles

- [Date Parsing](https://legacy.fullcalendar.io/v6/date-parsing.md) - FullCalendar’s API accepts date information in many places, such as when you set the initialDate or define an event’s start/end.
- [Date Objects](https://legacy.fullcalendar.io/v6/date-object.md) - FullCalendar’s API exposes Date objects in many places, such as dateClick or a View object’s activeStart/activeEnd.
- [Duration Object](https://legacy.fullcalendar.io/v6/duration-object.md) - A duration is a way to express an amount of time that has passed. It can also be used to express a time-of-day, in other words, the amount of time that has passed since the start of the day.
- [Date Formatting](https://legacy.fullcalendar.io/v6/date-formatting.md) - The term “date formatting” means taking a Date object and converting it into a string. The string can either be a standard string format like ISO8601 (ex: '2018-05-01') or it can be something more custom that you can display to users.
- [defaultRangeSeparator](https://legacy.fullcalendar.io/v6/defaultRangeSeparator.md) - The separator text used for date-formatting ranges throughout the API.

## Util Methods

- [formatDate](https://legacy.fullcalendar.io/v6/formatDate.md) - A utility function that formats a date into a string.
- [formatRange](https://legacy.fullcalendar.io/v6/formatRange.md) - Formats two dates, a start and an end, into a string. A separator string, most likely a dash, will be intelligently inserted between the two dates.
- [Calendar::formatDate](https://legacy.fullcalendar.io/v6/Calendar-formatDate.md) - A method that formats a date into a string. It inherits the locale and time zone settings of the calendar it’s called on.
- [Calendar::formatIso](https://legacy.fullcalendar.io/v6/Calendar-formatIso.md) - Formats a date into an ISO8601 string. Outputs a UTC offset appropriate to the calendar it’s called on.
- [Calendar::formatRange](https://legacy.fullcalendar.io/v6/Calendar-formatRange.md) - Formats two dates, a start and an end, into a string. A separator string, most likely a dash, will be intelligently inserted between the two dates. Inherits the time zone and locale settings of the calendar it’s called on.

## Plugins

- [Moment Plugin](https://legacy.fullcalendar.io/v6/moment-plugin.md) - Moment JS is a popular library for parsing, formatting, and manipulating dates.
- [Moment Timezone Plugin](https://legacy.fullcalendar.io/v6/moment-timezone-plugin.md) - Moment Timezone is a library for dealing with time zones. FullCalendar has a connector plugin that gives your calendar support for arbitrary named time zones. It provides a “named timezone implementation” for the timeZone setting.
- [Luxon Plugin (v2 & v3)](https://legacy.fullcalendar.io/v6/luxon.md) - Luxon is a JavaScript date library that cleverly leverages the browser’s native APIs for many things such as time zones, locales, and formatting.
- [Luxon Plugin (v1)](https://legacy.fullcalendar.io/v6/luxon1.md) - Luxon is a JavaScript date library that cleverly leverages the browser’s native APIs for many things such as time zones, locales, and formatting.

## See Also

- [timeZone](https://legacy.fullcalendar.io/v6/timeZone.md) - A time zone is a region of the world that serves as a context for displaying dates.