:christmas_tree: Giving back to open source for the holidays
Generate and work with holidays in Python
:earth_americas: Worldwide holiday (REST API), NuGet or docker container
The easy PHP Library for calculating holidays
判断一天是不是法定节假日/法定工作日（查看节假日安排）
worldwide holidays
Time calculations using business hours.
Go (golang) calendar library for dealing with holidays and work days
Calculate which days you don't have to work!
pyge: Holiday Gift Exchange Picker
Project Management System
Hebcal, a perpetual Jewish Calendar (ES6)
A Moment.js plugin for handling holidays. NO LONGER MAINTAINED (DEPRECATED)
Smart-Period aims to simplify Time-range manipulation
Tools for working with recurrence rules, holidays, and calendars