The duration calculator calculates the number of days, months and years between two dates. Calculate local times for sunrises, sunsets, meridian passing, sun distance, altitude and twilight, dusk and dawn times. Time your activities and save your timings in a text file.
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Edit laps with a single click and without interrupting the timer.
A free, easy to use stopwatch with start alerts, split times and intervals.
Create one or multiple timers and start them in any order. Interactive night sky map for any location. It also counts up from a past date. Keep track of lap times by recording splits in a text file.
Which planets, stars, constellations, and comets are visible tonight? Free, simple online stopwatch with start alerts, lap times, and sounds. Create a countdown timer that counts down in seconds, minutes, hours and days to any date, with time zone support. Set a silent timer clock or choose a sound.
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Online stopwatch, with start alerts, lap times and sounds. Save details of your timings in a text file. Stopwatch timer countdown to any date eclipse countdown summer countdown new year countdown countdown for your site calculators date to date calculator (duration) business date to.
