Featured in Domain Arrivals · 2026-08-15
Lunar App, a field guide to the new crescent
A location-aware astronomy tool for predicting crescent visibility, tracking the moon, and navigating Hijri dates.
Why it surfacedLunar App turns the search for the new Islamic month into a practical observing guide: set a city, choose an evening, and get visibility predictions, sunset-to-moonset timing, sky direction, moon altitude, and a nearby star reference. It also includes a global visibility table, Qibla direction, and a real-time Moon Now view, with predictions grounded in the Yallop criterion and clear warnings that local weather and sighting decisions still matter.
Continue into the edition
The Two-Tonne Temperature Problem
August 15’s newborn domains include a live-aboard hydrogen airship with a two-tonne lift problem, a Japanese toolbox that explains its assumptions, an advisory-by-advisory Hawaiʻi hurricane archive, and a wedding-gift game about ungrateful poultry.
This is one of 1,000 discoveries in the 2026-08-15 Domain Arrivals issue.