Hey Product Hunt 👋 I built World on Time because I got tired of timeanddate.com. Every time I needed to schedule a call across timezones, convert a currency, or check a public holiday, I'd land on a site that felt like 2005 — cluttered, ad-heavy, slow on mobile, and impossible to use offline. The data is great. The experience is not. So I built the alternative I wanted: • Mobile-first design — most timezone searches happen on phones • PWA — installable on iOS, Android, Windows, macOS. No app store • Works fully offline for the things that don't need network (clock, converter, calendar, sun & moon) • Free public API — no key, 100 req/day, for developers • Clean, fast, no popups The hardest part wasn't the tools — it was the data. 600+ timezones with DST rules, 160+ currencies with daily-updated rates, 100+ countries of holidays, sun & moon math accurate to the second. Every tool had a "this is harder than it looks" moment. It's free, ad-supported (lightly — max 2 slots per page, never popups). No signup. Try it: worldontime.app Would love your feedback — especially on the mobile experience and the embed widget. What would make this a daily-use tool for you?

World on Time

A modern, mobile-first alternative to timeanddate.com

A modern, mobile-first alternative to timeanddate.com