Violet Town, Victoria 36.63° S 145.71° E

Software for where the signal ends.

Analemma Labs is a small, independent software company in north-east Victoria. We make TerraADV, offline navigation for the back roads and bush tracks of Australia and New Zealand.

The Analemma Labs mark: the sun's noon position over Violet Town across one year, with today's position circled.

01 Work

TerraADV

Offline adventure navigation for Australia and New Zealand.

Plan the trip, download your region, and navigate with no reception. Routing leans towards dirt when you want it to, official road closures are on the map, and the hazard map is built by the riders and drivers using it.

Platforms
iPhone, Android and a web route planner
Coverage
Offline maps for every Australian state and territory, and New Zealand
Routing
Three profiles: Road, ADV and Hard ADV
Status
In beta

terra-adv.com

TerraADV's Explore map around Jamieson and Lake Eildon in the Victorian high country, with terrain shading, dirt tracks and a closed road marked in red.

02 The mark

The sun at noon, all year.

Photograph the sun from the same spot at the same time every day for a year and it traces a lopsided figure eight: an analemma. The loop comes from the tilt of the Earth’s axis, and the lopsidedness from its elliptical orbit.

Our mark is that figure for noon at Violet Town, drawn from NOAA’s solar tables. Its 24 dots are about 15 days apart, with the December solstice at the top. The warm half runs from the September equinox to the March equinox; the cool half is the rest of the year.

Date
Sun’s declination
Equation of time
Solar noon, Violet Town

Calculated in your browser from NOAA’s solar approximations.

03 Company