Articles

Explanations of how sunset, twilight and golden hour actually behave — each one built around a table computed for 733 tracked cities, because the concept is easy to find elsewhere and the numbers are not.

How Long After Sunset Does It Get Dark? Twenty-one minutes at the equator, thirty-six in London, never in the Arctic summer — with the table.
What Is Golden Hour, and Why It Is Rarely an Hour An angle, not an hour — 41 minutes at the equator, all night in the Arctic. With the table.
What Is Blue Hour, and How Long Do You Actually Get? Ten minutes in the tropics, thirty in the north — the window nobody puts a number on.
Civil, Nautical and Astronomical Twilight Explained The three bands defined, and how long each lasts from Nairobi to Longyearbyen.
Why Sunset Times Differ Across One Time Zone Madrid's solar noon is 77 minutes late, Novosibirsk's 90 — the cities where the clock lies most.
Why the Earliest Sunset Is Not on the Shortest Day The earliest sunset beats the solstice by days or weeks, and latitude decides by how much.
How Accurate Are Published Sunset Times? Measured against USNO — and the reason several popular sources are 90 seconds out.
Midnight Sun and Polar Night: Where, When, and for How Long 128 days without a sunset in Longyearbyen — the real date ranges for Arctic towns.
Sunset Direction: Why It Moves Through the Year The sunset point moves 47° in Nairobi and 79° in London — the swing, by city.
Do Clouds Make Better Sunsets? The Science Which cloud layer helps, which ruins it, and the scoring model with its thresholds.
When Is the Shortest and Longest Day of the Year? Same dates worldwide, wildly different days — the solstice figures by city.
Why Sunsets Are Red and Orange, and How Long the Colour Lasts The scattering explained, plus the one thing nobody adds — how long the colour lasts, by city.
The Best Months for Sunset Photography, by Latitude December in London, June in Reykjavík, no best month in Singapore — the swing, computed.
What Daylight Saving Actually Does to Your Sunset Time The overnight jump, city by city, with the dates and the before-and-after times.
Sunset or Sunrise for Photography? The Measurable Differences The argument is mostly taste — except for two things you can measure.