# Date Library

## Articles

- [Date Parsing](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](date-object.md) - FullCalendar's API exposes Date objects in many places such as dateClick or a View object's activeStart/activeEnd.
- [Duration Object](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](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.
- [temporal-polyfill](temporal-polyfill.md) - The temporal-polyfill package is now a peer dependency of all the FullCalendar packages. This means you are required to install it.

## Util Methods

- [formatDate](formatDate.md) - A utility function that formats a date into a string.
- [formatRange](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](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](Calendar-formatIso.md) - Formats a date into an ISO8601 string. Outputs a UTC offset appropriate to the calendar it's called on.
- [Calendar::formatRange](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 Formatting Plugin](format-moment.md) - FullCalendar's Moment JS connector package lets you use moment formatting strings for all date-formatting settings. The plugin allows you to specify moment formatting strings wherever a date formatting input is expected.
- [Luxon Formatting Plugin](format-luxon3.md) - FullCalendar's Luxon connector package lets you use Luxon formatting strings for all date-formatting settings. The plugin allows you to specify luxon formatting strings wherever a date formatting input is expected.

## See Also

- [timeZone](timeZone.md) - A time zone is a region of the world that serves as a context for displaying dates. It affects a Calendar instance in the following ways: