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    Types: TextFile
    Names: »sun.1«

└─⟦87ddcff64⟧ Bits:30001253 CPHDIST85 Tape, 1985 Autumn Conference Copenhagen
    └─ ⟦this⟧ »cph85dist/astro/sun/sun.1« 

TextFile

.TH SUN 1 "9 May 1985"
.UC 4
.SH NAME
sun \- calculate sunrise and sunset times
.SH SYNOPSIS
.B sun
[
.B \-p 
]
[
.B -t \fIh:m:s\fP 
]
[
.B -d \fIm/d/y\fP 
]
[
.B -a \fIlat\fP 
]
[
.B -o \fIlon\fP 
]
 [
.B -z \fItz\fP 
]
.LP
.SH DESCRIPTION
.I  Sun
Calculates the times of sunrise and sunset for the current system date.
Optionally,
.I sun
calculates the current position of the sun and its position at sunrise and
sunset for other dates, times and places.
.PP
The command line options are:
.TP
.B \-p 
Show current altitude and azimuth for the sun and its azimuth 
at sunrise and sunset.
.TP
.B -t \fIh:m:s\fP 
Use \fIh:m:s\fP as local hours (24 hour clock), minutes and  seconds as
the time instead of the current system time.
.TP
.B -d \fIm/d/y\fP 
Use \fIm/d/y\fP as the month, day and year instead of the current system date.
.TP
.B -a \fIlat\fP 
Use \fIlat\fP as the latitude of the observer, instead of the system latitude.
The latitude is specified in decimal degrees north.  For example, use 
45.5333 for Beaverton, Oregon.
.TP
.B -o \fIlon\fP 
Use \fIlon\fP as the longitude of the observer, instead of the system longitude.
The longitude is specified in decimal degrees west.  For example, use 
122.8333 for Beaverton, Oregon.
.TP
.B -z \fItz\fP 
Use \fItz\fP as the time zone of the observer, instead of the current system
timezone.  Timezone is specified as a positive number for locations west of
Greenwich.  For example, use 8 for Pacific Standard Time.
.SH AUTHOR
Robert Bond
.SH BUGS
Should figure out timezone and guess at longitude from the system time.  
Timezone, latitude and longitude are compiled in.