Skies — World Clock & Time Zones by Uryu Myao

My team is spread across different time zones. I built Skies so I could stop doing time math in my head.

Each city gets a card tinted by its sky right now — night, dawn, day, or dusk — calculated from the sun's actual position, so you can tell at a glance whose day it is.

• Offsets relative to your base city (+5h, −13h, +5:45h), with the UTC offset alongside. No ambiguous abbreviations like CST or IST.
• Core Time shows where everyone's work hours overlap today. When they don't, it suggests the closest time instead of just saying "no overlap."
• Convert any time across all your cities.
• Search cities in English, Chinese or Japanese — or by former names like Bangalore or Kiev.
• Up to 30 cities. Reorder by dragging.
• Half-hour and 45-minute time zones, and daylight saving changes on the exact day they happen.

Works fully offline. No account, no tracking, no data collected — your city list and settings stay in your browser.

City data from GeoNames (CC BY 4.0).