World Clock

WORLD CLOCK — The Complete Time Zone Companion

Track time in any city on Earth. Whether you're coordinating international meetings, managing jet lag, or planning a call across continents, World Clock puts the entire world's time in your pocket — fully offline, no internet needed for core features.

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⏰ LIVE WORLD CLOCKS
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Add any of 200+ cities from every continent and watch their local times update live every second. Each city card shows:
• Current time and date
• Timezone abbreviation and UTC offset
• DST (Daylight Saving Time) indicator
• Day difference badge (+1 day / -1 day)
• Public holiday banner (55+ countries)
• Your personal notes and custom label

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🗺️ WORLD MAP VIEW
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See all your saved cities pinned on an interactive world map with live time labels. Watch the globe come alive with your favorite time zones — great for understanding the geographic spread of your connections.

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📊 TIME DIFFERENCE CALCULATOR
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Pick any two cities and instantly see the exact time difference, what time it is in each location right now, and the best overlap window for calls or meetings.

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👥 MEETING PLANNER
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Add up to 5 cities and find the best time slot that works across all time zones. Ideal for distributed teams scheduling standups, client calls, or webinars.

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✈️ FLIGHT TIME CALCULATOR
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Enter departure city, arrival city, and flight duration. Get the exact local arrival time adjusted for time zones — including date-line crossing detection and day difference alerts. No more confused arrivals!

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🌅 SUNRISE & SUNSET TIMES
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Uses the NOAA solar algorithm (the same one NASA uses) to calculate precise sunrise, sunset, and solar noon for any city — 100% offline, no GPS or internet required.

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⏰ SMART ALARMS
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Set alarms in any city's local time — perfect when you need to wake up at 7 AM Tokyo time, not your local time. Features include:
• Repeat scheduling (daily, weekdays, weekends, or custom days)
• Gradual Wake: gentle 5-minute escalating vibration so you wake naturally
• Sunrise Alarm: trigger at that city's local sunrise time
• Alarm labels for easy identification
• Persists through device restarts

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🏖️ PUBLIC HOLIDAY AWARENESS
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Never schedule a call on a public holiday by accident again. World Clock shows a holiday banner on city cards for 55+ countries with 300+ built-in holidays — all offline, no internet required.

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📝 CITY NOTES & CUSTOM LABELS
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Rename any city to something personal ("Mom's House", "Client HQ", "Beach House") and add private notes ("Call Tuesdays only", "UTC-5 in summer") visible right on the clock card.

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📱 HOME SCREEN WIDGET
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Add the World Clock widget to your home screen to see live times for your top two cities without opening the app. Updates every minute automatically.

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🎨 BEAUTIFUL DESIGN
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• Material Design 3 with full dark mode support
• Clean, readable card-based interface
• 12-hour and 24-hour time format toggle
• Smooth, fast and battery-friendly