I've been working on datetime.app, an open-source(MIT) time management web application that goes beyond just showing world clocks. It's designed specifically for developers, remote teams, and anyone working across time zones.

What it does:

• World Clock with customizable timezone selection

• Time Zone Converter between any two zones

• Age Calculator with precise calculations

• Year Progress Bar (because who doesn't love progress bars?)

• Countdown Timer for meetings/deadlines

• Sunrise/Sunset Times based on your location

• World Holidays for 200+ countries

• UTC/Unix timestamps for developers

What makes it special:

• Developer-friendly: Includes Unix timestamps, ISO formats, DST detection

• Real-time accuracy: Monitors clock sync with world time APIs

• Fully internationalized: Proper i18n with locale routing

• Accessibility first: Screen reader support throughout

• Mobile optimized: PWA-ready responsive design

🔧 Try it:

• Live: https://datetime.app

• Github https://github.com/airyland/datetime.app

• Docker: docker run -p 3000:3000 ghcr.io/airyland/datetime:latest