About DateAndTimezone
A comprehensive, free toolkit for time, astronomy, and space exploration — built for curious minds who look at the clock and wonder about the cosmos.
Our Mission
Making time and space accessible to everyone. We believe that accurate time tools, astronomical data, and space exploration information should be free, fast, and beautifully designed — no accounts, no ads, no paywalls. Just open your browser and explore.
What We Offer
From world clocks to interstellar trackers, DateAndTimezone brings together the tools you need to understand time and explore space — all in one place.
World Clock
Live analog clocks for 60+ cities with flag colors, interactive map, and timezone comparison
Alarm Clock
Set alarms with custom sounds and labels — works right in your browser
Timer
Customizable countdown timer with alerts for cooking, workouts, and more
Stopwatch
Precision stopwatch with lap times and split tracking
Pomodoro Timer
Focus sessions with breaks using the proven Pomodoro technique
Countdown Creator
Create and share beautiful countdowns to any date or event
Monthly Calendar
Clean, printable monthly calendar with holidays and event planning
Atomic Clock / Exact Time
Precise current time synced to atomic clock standards for your timezone
Time Zone Map
Interactive world map showing all time zones with click-to-explore navigation
Time Zone Comparison
Compare times across multiple cities and zones side by side
Meeting Planner
Find the best meeting times across time zones for global teams
Call Planner
Check the best times to call friends and colleagues in different time zones
Day & Night Map
Live visualization of day and night regions across the globe
Sunrise & Sunset
Accurate sunrise, sunset, golden hour, and twilight times for any location on Earth
Daylight Hours
Track daylight duration changes throughout the year for any location
Continents & Countries
All 196 countries organized by continent with capitals, timezones, and populations
Date Difference Calculator
Calculate the exact duration between any two dates in years, months, and days
Age Calculator
Your exact age in years, months, days, hours, minutes, and seconds — ticking live
Week Number
Find the ISO week number for any date and browse weeks of the year
Leap Year Calculator
Check any year, understand the rules, and find your next Feb 29 birthday
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates instantly
Julian Date Converter
Convert between Julian dates and Gregorian calendar dates
Roman Numeral Converter
Convert numbers to and from Roman numerals with explanation of rules
World Population Clock
Live world population counter with births, deaths, and growth by continent
Astronomy Dashboard
Moon phases, planet visibility, NASA APOD, and daily space news at a glance
Astronomical Calendar 2026
Key astronomical events, eclipses, meteor showers, and planet oppositions for 2026
Solar System Explorer
Interactive guide to all planets, dwarf planets, asteroid belt, and Kuiper belt
Full Moon Calendar
Traditional moon names, phase tracker, supermoons, and cultural significance
Eclipse Calendar
All solar and lunar eclipses through 2030 with visibility regions and countdowns
Meteor Shower Calendar
Annual meteor shower calendar with peak dates, hourly rates, and viewing tips
Constellation Guide
Seasonal star maps, zodiac constellations, and tips for navigating the night sky
Dark Sky Guide
Bortle scale, certified dark sky parks, equipment guide, and stargazing tips
Solar Weather & Aurora
Live Kp index, aurora forecast, Solar Cycle 25 tracking, and best aurora destinations
Planetary Hours
Traditional planetary hours for each day based on sunrise and sunset
Speed of Light Calculator
Calculate light travel times between celestial objects and across cosmic distances
Zodiac Calculator
Western zodiac, Chinese zodiac, birth moon phase, and cosmic birthday facts
Space News
Latest space news articles curated from trusted aerospace journalism sources
Space Launches
Live feed of upcoming rocket launches worldwide with countdowns and details
ISS Tracker
Real-time ISS position on a live world map with people in space and facts
See the ISS
Find out when the ISS will be visible from your location and how to spot it
Space Missions History
Historic missions from Apollo to Artemis, plus notable astronauts and debris data
Space Timeline
The complete timeline of space exploration from the Big Bang to today
Satellites & Orbits
Orbit types, famous satellites, space agencies, and the space debris problem
Voyager Tracker
Live distance counter for Voyager 1 & 2 plus the Golden Record story
Space Photo Gallery
NASA APOD and searchable image library — nebulae, galaxies, planets, and more
Sounds of Space
Sonified radio waves from Jupiter, Saturn, pulsars, black holes, and Mars
Space Unit Converter
Convert between astronomical units, light-years, parsecs, and more
Quiz Hub
Five fun quizzes covering timezones, astronomy, space history, planets, and more
Planet Age Calculator
Your age on every planet plus weight and number of sunrises
Doomsday Clock
The Bulletin's Doomsday Clock — history, current time, and what it means
This Day in Space
What happened in space history on today's date — 365 days of events
Space Industry & Careers
Companies, space agencies, job links, and industry resources
Our Values
The principles that guide everything we build.
Free Forever
Every tool on DateAndTimezone is completely free. No subscriptions, no paywalls, no premium tiers. We believe access to time and space data should be universal.
Privacy First
No accounts, no tracking cookies, no personal data collection. Your preferences stay in your browser. We never sell data because we never collect it.
Accuracy
We source data from authoritative providers — NASA, public astronomical databases, and verified timezone registries — to ensure the information you see is reliable.
Open Data
We believe in the power of open, public data. Every data source we use is freely available, and we credit each one transparently.
Data Sources
We rely on trusted, publicly available data sources. All data displayed on DateAndTimezone comes from open APIs and public domain datasets.
Who We Are
DateAndTimezone is built with passion by space and technology enthusiasts who believe the wonders of time and the cosmos should be at everyone's fingertips. We are a small team driven by curiosity and a commitment to making useful tools freely available.
Built for Speed
Built with Next.js, powered by open APIs, and designed for speed. DateAndTimezone loads fast, works on any device, and requires zero configuration. Just open it and go.
Ready to Explore?
Discover world clocks, track the ISS, explore the solar system, and more — all free, all in your browser.
Explore Our Tools