Live countdowns, ticking every second — until sunset, and until it's fully dark (civil twilight ends). Computed for Houston, TX's coordinates from NOAA solar equations.
The live countdown above shows exactly how long until sunset in Houston, TX, ticking every second. Today's sunset time is computed for the city's coordinates from NOAA solar equations.
It is fully dark when civil twilight ends — the sun is 6 degrees below the horizon — roughly 25 to 35 minutes after sunset in Houston, TX. The second countdown above tracks the exact time.
Civil twilight is the span after sunset (and before sunrise) when the sun is less than 6 degrees below the horizon — there is still enough light to see, but it grows steadily darker. When it ends, it is fully dark.
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