🌍 How time zones work
UTC, offsets, half-hour zones, and the volunteer-run database that keeps every phone on Earth honest. Why railroads invented the whole system, and why China runs on a single clock.
🕐 Daylight saving time, explained
Why we spring forward and fall back, which countries refuse to, what the switch does to your body, and practical tips for surviving it twice a year.
🌙 Moon phases without the jargon
Why the Moon changes shape, the one-second trick to tell waxing from waning, what supermoons and blue moons really are, and the best nights for stargazing.
⛅ How weather forecasts are made
Balloons, satellites, supercomputers, and the butterfly effect — plus what "70% chance of rain" actually means and how far ahead you can trust a forecast.
✈️ Jet lag: why it happens & how to beat it
Your body clock, why flying east hurts more than west, and the light-timing tricks that genuinely speed up recovery.
🌇 Golden hour & blue hour
Why low sun turns the light warm, how long the magic lasts at your latitude, and how to time photos, walks and proposals to it.
Why we write these
Time & Sky started as a set of fast, free tools — a world clock, a time zone converter, a weather forecast, and friends. But the questions behind the tools are genuinely interesting: why the world argues about clock time, why the Moon waxes and wanes, why a forecast is trustworthy on Tuesday and shaky by Sunday. These guides are our answers, written to be read by anyone. More are on the way.