Frequently Asked Questions

A street alignment (sometimes called a 'henge' moment) occurs when the sun rises or sets in perfect alignment with a city street. This creates a dramatic corridor of golden light down the street, similar to how Stonehenge aligns with the sun on solstices. Cities like New York have 'Manhattanhenge' - CityHenge helps you find these moments in Australian cities.

CityHenge uses precise astronomical calculations combined with detailed street mapping data to predict when alignments will occur. We analyze the bearing (direction) of streets and calculate when the sun's position will match, accounting for your exact location and local conditions.

CityHenge currently tracks alignments in 17 Australian cities: Sydney, Melbourne, Brisbane, Perth, Adelaide, Canberra, Hobart, Darwin, Gold Coast, Newcastle, Wollongong, Geelong, Cairns, Townsville, Toowoomba, Ballarat, and Bendigo.

Our predictions are highly accurate, typically within a few minutes of the actual alignment. However, local conditions like weather, buildings, and terrain can affect visibility. We recommend arriving 10-15 minutes early to find the best viewing spot.

CityHenge offers a free tier with 2-day forecast access and basic alignment information. Upgrade to Pro for 90-day forecast planning, event hosting, offline access, advanced atmospheric details, and more premium features.

Yes! With CityHenge you can save locations and create a personal nature journal to document your alignment experiences with photos and notes.

While you need an internet connection to download alignment data and sync your journal, the app caches recent data so you can view nearby alignments offline.

Enable notifications in the app to receive alerts before alignments occur near you. You can customize the timing and distance for notifications in your settings.