Sunrise Calculator

by Merlin

Sunrise Calculator computes and displays the times of sunrise and sunset, given a latitude, a longitude and a date.

The Widget can make allowances for altitudes of up to 15,240 metres (50,000 feet). The altitude compensation calculation, performed by the Widget, is not part of the published algorithm, on which the main calculation is based, and should be treated with caution.

This new version also computes and displays the times of moonrise and moonset.
Current Version: 1.8

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  1. November 16, 2007 · version 1.5
    exelet little widget

    I'm a landsscape photographer and its really usefull, but it would be even better if it took the lat long infomation from my gps!

    Rob

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  2. punkteleos
    April 11, 2006 · version 1.2 punkteleos
    Nice widget, thanks.

    Understand that as an American it is my duty to be Americentric, so I was wondering if you might add an automatic daylight savings adjustment for us.

    Also, as a runner, I am frequently more concerned with the end of civil twilight, or when it really gets dark, and whether there will be any moonlight. I've always used the site listed below. I'm not sure how extensive you care to be or whether twilight calculations are any different, but I thought I might put in a request for these calculations.
    http://aa.usno.navy.mil/data/docs/RS_OneDay.html

  3. Michel, from Tours
    February 19, 2006 · version 1.0.1 Michel, from Tours
    Thanks, Harry! In fact, getting higher (in altitude) is like moving eastwards for a sea-level observer, or advancing in time... nice horizon!
    Now, how about those living under sea-level? ;))

    3 minutes and 22 seconds, is it? I'm surprised it be that much. Great for a declaration of love: one can take his time!

    Thanks for sharing your knowledge. Hope tomorrow will be sunny!

  4. Harry Whitfield
    February 18, 2006 · version 1.0.1 Harry Whitfield
    Michel, from Tours: At 899 feet (274 metres) on the third platform of the Eiffel Tower, I reckon you would (today) have 3 minutes 22 seconds for abstract emotion (or to boil an egg).

  5. Michel, from Tours
    February 18, 2006 · version 1.0.1 Michel, from Tours
    @Harry Whitfield,
    Hi, and thanks for committing yourself to what was meant to be a point of theory (for the pleasure of precision) more than a personnaly required field. I know the equation gets rather complex if all parameters were computed. Moreover, those of us living above a significant altitude are a minority, in terms of what percentage I ignore. My concern, more as a dreamer than as a scientist, is to wonder on the privilege of an observer at the top of the Eiffel tower 900 feet above Pa More

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Version:

1.8

Updated:

2009-10-24

Downloads:

17,602
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