Show HN: I built a free worldwide holiday and disruption tracker

3 reverseblade2 0 8/30/2025, 8:04:14 PM alarms.global ↗

Hi HN,

I’m the creator of Alarms.Global, a free tool I built while working in logistics. I was constantly juggling scattered holiday calendars and scanning local news to figure out why shipments were delayed.

What it does: Tracks public holidays in 190+ countries (so you know when offices, ports, and customs are closed) Aggregates real-time transport disruptions (strikes, port congestion, weather issues, etc.) Shows everything on a filterable world map

Works in 14 languages The idea was to create a single open platform to see what might stop goods from moving today. Tech: It’s built with F#/.NET on the backend, Qdrant for vector search, GDELT + custom feeds for disruptions, and Leaflet.js/MapTiler for the map UI. I kept it lightweight to be fast and browser-friendly.

It’s still early some features are in progress but the core is live. I’d love feedback: What disruption sources would you want added? Anything confusing in the interface?

Try it here: https://alarms.global

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Show HN: I built a free worldwide holiday and disruption tracker

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