Hours of Dark 2015
Based purely on data, this artwork represents the total hours of dark for 2015.
Days of the year span clockwise from the top of the disc, represented by 365 lines. The proportion of white in each line reflects the incremental change in hours of light throughout the year. In addition, the continuous zig-zagging line shows the sun’s altitude above and below the horizon, making visible the maximum height of the sun on each day.