02-17-2020
Hi jeo_fb...
Assuming you are using Longitude and Latitude WRT Earth as a __sphere__ then it is not possible to create a rectangle as Euclidean geometry does not apply.
IF, however you just want the Longitude to change but have matching Latitudes and vice versa and those listing out then please confirm...
Bazza...
Last edited by wisecracker; 02-17-2020 at 07:01 AM..
Reason: Add the words "and vice versa"
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LEARN ABOUT DEBIAN
wmmoonclock
WMMOONCLOCK(1) General Commands Manual WMMOONCLOCK(1)
NAME
WMMOONCLOCK - Dockable Moon Phase Clock
SYNOPSIS
wmMoonClock [-display <Display>] [-bc <Color>] [-lc <Color>] [-dc <Color>] [-low] [-lat <Latitude>] [-lon <Longitude>] [-h]
DESCRIPTION
wmMoonClock displays the current phase of the moon. Clicking on the icon brings up different displays -- there are 5 in all. The different
"pages" are;
First Page
Shows the Moon phase image.
Second Page
Shows the current Local Time (LT) and Universal Time (UT), the Moon's Age (number of days since last new moon), the geometric (as
opposed to temporal) fraction of the way through the current lunar cyle (e.g. 50 for full moon), the fraction of the Moon's disc
that is illuminated (ratio of area illuminated to total area of disc) and whether the Moon is (locally) visible of not (i.e. is it
above the horizon?).
Third Page
Shows the Rise and Set times for yesterday (first line), today (middle line), and tommorrow (last line). If the Moon does not rise
or set on a given day a `null time' is shown (--:--). Note that these times should still be good for high latitude observers. Also
note that there will always be at least one (--:--) showing up per month. This is because once per month the Moon will rise (set) on
a given day but will set (rise) in the very early portion of the next day.
Fourth Page
Shows the Moon's horizon coordinates (i.e. the Altitude/Azimuth system). Azimuth is measured in degrees CCW from due south, and
altitude is measured in degrees from the horizon up to the Moon. Distance (Dist) is measured in units on Earth radii (1 Re is about
6370km). Note that this is a local coordinate system and will not be correct if the observer's latitude and longitude are not set
correctly.
Fifth Page
Shows the Moon's ecliptic coordinates. (i.e. the Right Ascention/Declination system). Useful for astronomers?
Many of the quantities shown will not be correct unless LT and UT are correct, and the user specifies the proper latitude and longitude.
OPTIONS
-display <display>
Use an alternate X Display.
-bc Set background color. (E.g. #7e9e69 or blue)
-lc Set color of text labels.
-dc Set color of data values.
-low Conserve colors. For 8-bit displays, a lower-color pixmap will be used automatically, but you can also force its use on higher-color
displays if necessary.
-lat <Latitude>
Observers Latitude in degrees. Positive in northern hemisphere, negative in southern hemisphere.
-lon <Longitude>
Observers Longitude in degrees. Greenwich is 0.0, and longitude increases positively toward the west. (Alternatively, negative num-
bers can also be used to specify longitudes to the east of Greenwich).
-h Display list of command-line options.
BUGS
Who knows? (Let me know if you find any).
AUTHOR
Michael G. Henderson <mghenderson@lanl.gov>
21 December 1998 WMMOONCLOCK(1)