The “midnight sun” is a natural phenomenon that occurs in summer months near the Earth’s poles where the sun doesn’t set and is visible 24 hours a day. During these times, the sun travels horizontally across the horizon throughout the night, causing the landscape to be bathed in an extended “golden hour” light.
Back in June, photographer Joe Capra traveled across Iceland for 17 days, covering some 2,900 miles and capturing 38,000 photographs using two Canon 5D Mark IIs and a Canon 7D. He then combined the stills into this time-lapse video showing the beauty of that country during the midnight sun.
You can see sun positions at sunrise, specified time and sunset. The thin orange curve is the current sun trajectory, and the yellow area around is the variation of sun trajectories during the year. The closer a point is to the center, the higher is the sun above the horizon. The colors on the time slider above show sunlight coverage during the day.
It was created by Vladimir Agafonkin. Similar apps include The Golden Hour Calculator and The Twilight Calculator.
The Twilight Calculator is a free and useful web app that takes in your location and spits out a table with when you should photograph if you want to shoot during golden hour.