⏰ Day.js 2KB immutable date library alternative to Moment.js with the same modern API

⏳ Modern JavaScript date utility library ⌛️

A Fast, Extensible Progress Bar for Python and CLI

😱 Falsehoods Programmers Believe in

The mobile-friendly, responsive, and lightweight jQuery date & time input picker.

Python datetimes made easy

🕗 The original jQuery plugin that makes it easy to support automatically updating fuzzy timestamps (e.g. "4 minutes ago").

Build Time Analyzer for Swift

Collection of advice on optimizing compile times of Swift projects.

Datetimes for Humans™

A gem providing "time travel", "time freezing", and "time acceleration" capabilities, making it simple to test time-dependent code. It provides a unified method to mock Time.now, Date.today, and DateTime.now in a single call.

Now is a time toolkit for golang

scheduler for Ruby (at, in, cron and every jobs)

A React-Native datetime-picker for Android and iOS

A date and time library based on the C++11/14/17 <chrono> header

BRPickerView 封装的是iOS中常用的选择器组件，主要包括：日期选择器（支持年月日、年月等15种日期样式选择，支持设置星期、至今等）、地址选择器（支持省市区、省市、省三种地区选择）、自定义字符串选择器（支持单列、多列、二级联动、三级联动选择）。支持自定义主题样式，适配深色模式，支持将选择器组件添加到指定容器视图。

Delorean: Time Travel Made Easy

Fancy date ranges for Moment.js

📅 Easy!Appointments - Open Source Appointment Scheduler

Date and time library for Rust

⏰ A straightforward date and time formatter in <1kb

Distributed Tracing, Metrics and Context Propagation for application running on the JVM

🕑 Immutable date and time library for javascript

361000 becomes "6 minutes, 1 second"

A standalone DateTime library originally based off of Carbon

GoLang Parse many date strings without knowing format in advance.

A natural language date/time parser with pluggable rules