Almanac Converter - A Java-based calendar converter

•    Java

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An easy-to-use Java-based calendar converter - able to convert between various known calendars.

date time date-time datetime-library calendar julian-calendar gregorian-calendar calendar-converter indian-calendar islamic-calendar hirji-calendar hebrew-calendar date-converter converter leap-year mayan-calendar

laravel-google-calendar - Manage events on a Google Calendar

•    PHP

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Spatie is a webdesign agency based in Antwerp, Belgium. You'll find an overview of all our open source projects on our website. The first thing you’ll need to do is to get some credentials to use Google API’s. I’m assuming that you’ve already created a Google account and are signed in. Head over to Google API console and click "Select a project" in the header.

laravel google calendar schedule events google-calendar

CalendarPicker - CalendarPicker Component for React Native

•    Javascript

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Note: react-native-calendar-picker v5 is a complete re-write of the calendar. This calendar is now written using ES6 syntax. I kept most of the same functionalities and added support for date ranges. CalendarPicker requires Moment JS. Date props may be anything parseable by Moment: Javascript Date, Moment date, or ISO8601 datetime string.

calendar-picker-component react-native-component calendarpicker react-native-calendar-picker calendar picker date day

Chronology - Building a better date/time library for Swift

•    Swift

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Chronology is an attempt to build a better date and time API for Swift on top of the constructs provided by Foundation. Foundation.framework has one of the absolute best and most capable APIs available to any developer on any platform. However, it comes with a heavy price in the form of cognitive load. Too many developers do too many incorrect things. Over the years, Foundation has gained more and more convenience methods via the Calendar type, but fundamental issues remain.

swift-library date datetime date-time date-formatting dates time timezone calendar calendars calendar-api

chronos - A standalone DateTime library originally based off of Carbon

•    PHP

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Chronos aims to be a drop-in replacement for nesbot/carbon. It focuses on providing immutable date/datetime objects. Immutable objects help ensure that datetime objects aren't accidentally modified keeping data more predictable. The biggest and main difference is that Chronos extends DateTimeImmutable instead of DateTime. Immutability for date values has proven to be a great way of avoiding bugs and reduce the amount of code, since developers don't have to manually copy the instance every time they need a change.

library datetime-objects mutable-objects calendar-dates immutable-objects time

The Expert Calendar

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The Expert Calendar is a MOSS 2007 webpart which allows to connect to a Event Item List and display event items in a small design customizable calendar with links to the events. Handy for a "quick-win" event display.

recurr - PHP library for working with recurrence rules (RRULE); meant to help with recurring calendar events

•    PHP

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Recurr is a PHP library for working with recurrence rules (RRULE) and converting them in to DateTime objects. Recurr was developed as a precursor for a calendar with recurring events, and is heavily inspired by rrule.js.

recurring-events recurrence recurrence-rules

calendar - date-time and time zone handling in Elixir

•    Elixir

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Calendar is a datetime library for Elixir. Providing explicit types for datetimes, dates and times. Full timezone support via its sister package tzdata.

MBCalendarKit - An open source calendar framework for iOS, with support for customization, IBDesignable, Autolayout, and more

•    Objective-C

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MBCalendarKit is a calendar control written in Objective-C with modern best practices and Swift interoperability in mind. It offers a flexible calendar control, with support for displaying any calendar system supported by NSCalendar. It also includes an API to customize the calendar cells. It also ships with a prebuilt view controller, inspired by the original iOS calendar.

calendar calendar-view calendar-widget calendar-control ios uikit

simple_calendar - A wonderfully simple calendar gem for Rails

•    Ruby

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Simple Calendar is designed to do one thing really really well: render a calendar. It lets you render a calendar of any size. Maybe you want a day view, a 4 day agenda, a week view, a month view, or a 6 week calendar. You can do all of that with the new gem, just give it a range of dates to render.It doesn't depend on any ORM so you're free to use it with ActiveRecord, Mongoid, any other ORM, or pure Ruby objects.

calendar week-calendar custom-calendar meeting month

kalendaryo - An unopinionated React date component :atom_symbol: + :date:fns

•    Javascript

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Kalendaryo is an unopinionated React component for building calendars. It has no opinions about what your calendar component should look or function like but rather only helps you deal with those unique constraints by providing various variables your calendar component needs such as the calendar's state data and methods for getting(i.e. all the days in a month) and setting(i.e. selecting the date from a day) plus many more! See the Basic Usage section to see how you can build a basic calendar component with Kalendaryo, or see the Examples section to see more examples built with Kalendaryo. Is the state for the current date the component is in. By convention, this should only change when the calendar changes its current date, i.e. moving to and from a month or year on the calendar.

react-date react-kalendaryo react-date-component react calendar react-calendar kalendaryo unopinionated-react-date-component react-calendar-component

react-native-calendar-events - React Native Module for iOS and Android Calendar Events

•    Java

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A React Native module to help access and save events to iOS and Android calendars. This package assumes that you already have a React Native project or are familiar with React Native. If not, checkout the official documentation for more details about getting started with React Native.

android-calendar-events ios-calendar-events react-native calendar-events alarms calendar-api recurring-events ios-calendar-api android-calendar-api react-native-module andriod ios-library react-component ios android eventkit reminders

ThreeTen - Backport of DateTime functionality based on JSR-310 to Java SE 6 and 7

•    Java

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Backport of functionality based on JSR-310 to JDK1.7. This is NOT an implementation of JSR-310. Instead, this is a simple backport intended to allow users to quickly use the JSR-310 API on Java SE 6 and 7. The backport should be referred to using the "ThreeTen" name.

date time date-time java-date-time calendar datetime-library java-library

flatpickr - lightweight, powerful javascript datetimepicker with no dependencies

•    TypeScript

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Almost every large SPA or project involves date and time input. Browser's native implementations of those are inconsistent and limited in functionality. Most other libraries require you to pull in heavy dependencies like jQuery, Bootstrap, and moment.js. I wanted something that was good-looking out of the box, dependency-free, powerful, and extensible. flatpickr provides more functionality at a fraction of the size of other libraries.

datetime datetime-picker datepicker timepicker daterange date daterangepicker datetimepicker calendar time picker lightweight

material-calendar-view - :calendar: Material Design Calendar compatible with API 11+

•    Java

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MaterialCalendarView is a prettier and simpler, material design calendar that allows full customization and it's backwards compatible with API 11+.

calendar android custom-view material-design material-calendar calendar-view

CalendarView - Android上一个优雅、万能自定义UI、支持周视图、自定义周起始、性能高效的日历控件，支持热插拔实现的UI定制！支持标记、自定义颜色、农历、自定义月视图各种显示模式等。Canvas绘制，速度快、占用内存低，你真的想不到日历居然还可以如此优雅！An elegant, highly customized and high-performance Calendar Widget on Android

•    Java

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Android上一个优雅、万能自定义UI、支持周视图、自定义周起始、性能高效的日历控件，支持热插拔实现的UI定制！支持标记、自定义颜色、农历、自定义月视图各种显示模式等。Canvas绘制，速度快、占用内存低，你真的想不到日历居然还可以如此优雅！An elegant, highly customized and high-performance Calendar Widget on Android.

calendarview calendar-component calendar-view calendar-widget calendar calendar-api android

DotNetNuke® Events

•    

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DotNetNuke® Events manages display of upcoming events as a list in chronological order or in calendar format with additional information and links set to automatically expire or re-occur by days, weeks, months or years.

dnn dotnetnuke events event-management calendar dotnetnuke-module event

Small Sharepoint Calendar

•    

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Ajax Enabled Small Sharepoint Calendar

ajax-calendar calendar calendar-webpart moss-2007 moss-2007-tools moss-calendar moss-webparts

Simple-Calendar - A simple calendar with events, customizable widget and no ads.

•    Kotlin

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A simple calendar with events and a customizable widget.An offline calendar without any other calendar integration. You can easily create recurring events and setup reminders, it can also display week numbers.

calendar android android-development open-source freedom kotlin

SilkCal - Android calendar view inspired by Sunrise calendar and iOS7 stock calendar

•    Java

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Android calendar view inspired by Sunrise calendar and iOS7 stock calendar. Thanks to Robin Chutaux for his CalendarListview.