Editing Orrery

Warning: You are not logged in. Your IP address will be recorded in this page's edit history.

Warning: This page is 57 kilobytes long; some browsers may have problems editing pages approaching or longer than 32kb. Please consider breaking the page into smaller sections.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision Your text
Line 90: Line 90:
The "Sun and Moon" button displays a page giving the sun and moon positions, rise and set times, phase, etc. for five days, centered on today.
The "Sun and Moon" button displays a page giving the sun and moon positions, rise and set times, phase, etc. for five days, centered on today.
-
The highlighted date is the current UT date (unless the time menu has been used to select a different time). The highlighted rise and set times are the next ones which will occur at your location. Of course, that may be on a different UT date (for example, during daylight hours, the next sunrise will be tomorrow). The times are shown as UT, which may annoy people. UT is used because the orrery allows you to select any location on the earth, and any time from 3000 BC until 3000 AD. It would be very difficult to keep track of all the timezone, daylight savings change dates, etc. for that time range! So I have wimped out, and displayed UT, which is always reasonably well defined.
+
The highlighted date is the current [[:wikipedia:Universal_time|Universal Time]] (UT) date (unless the time menu has been used to select a different time). The highlighted rise and set times are the next ones which will occur at your location. Of course, that may be on a different UT date (for example, during daylight hours, the next sunrise will be tomorrow). The times are shown as UT, which may annoy people. UT is used because the orrery allows you to select any location on the earth, and any time from 3000 BC until 3000 AD. It would be very difficult to keep track of all the timezone, daylight savings change dates, etc. for that time range! So I have wimped out, and displayed UT, which is always reasonably well defined.
The current sun and moon positions shown are geocentric - no topocentric correction has been applied. However topocentric corrections are applied when rise and set times are calculated, so they should be reasonably accurate for a specific location on earth.
The current sun and moon positions shown are geocentric - no topocentric correction has been applied. However topocentric corrections are applied when rise and set times are calculated, so they should be reasonably accurate for a specific location on earth.

Learn more about Contributing to the wiki.


Please note that all contributions to maemo.org wiki may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see maemo.org wiki:Copyrights for details). Do not submit copyrighted work without permission!


Cancel | Editing help (opens in new window)

Templates used on this page: