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1989-10-16
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Disk No: 1614
Disk Title: Skyclock
PC-SIG Version: S1
Program Title: Skyclock
Author Version: 1.00
Author Registration: $25.00
Special Requirements: None.
A unique program, SKYCLOCK is a historical astronomical ephemeris and
data conversion program. Unlike most other astronomical ephemeris
programs, this program works with dates of both the Julian and Gregorian
calendars and dates A.D. and B.C. SKYCLOCK can also calculate the
positions of the visible astrological houses for a specific date. Thus
SKYCLOCK can be used for both astronomical and astrological purposes.
With SKYCLOCK you may also automatically convert dates between several
calendars used at different times throughout history. On what day did
Julius Caesar die according to the Roman calendar? With SKYCLOCK you
can find out.
As an astronomical ephemeris, SKYCLOCK allows you to calculate the
positions of the sun, moon, planets, stars, comets, and astrological
houses for any date back to several centuries B.C. You must first
enter the date and time and the latitude and longitude of your desired
observation point. You may optionally have the date and time
automatically entered from DOS, and the time entered may be according
to five different time standards. SKYCLOCK then lists all the time
variable elements entered, and the position of the celestial body. For
the planets, SKYCLOCK lists the heliocentric and geocentric longitude
and latitude, its perihelion, the right ascension, the declination, the
azimuth, the altitude, the phase angle, elongation from the sun, the
distance to the sun, and the distance to the earth. Other specific
information is included for the sun, moon, comets and stars. SKYCLOCK
can also list summary information of the positions for the sun, moom,
and all the planets for a specific date all at once. For calculating
the positions of the visible astrological houses, you must also enter
the longitude of Mid-Heaven, the geographical latitude, and the
obliquity of the ecliptic. SKYCLOCK will then list the positions of
the visible astrological houses according to nine different systems
used throughout history.
SKYCLOCK is not only an astronomical ephemeris, but also a calendar
date conversion program. SKYCLOCK allows you to easily convert dates
between nine different calendars used throughout history. These
include the Julian, Gregorian, Egyptian, Alexandrian, Roman,
Nabonassar, Islamic, French, and Zodiacal calendars. For converting
dates between the calendars you may enter either the date or the Julian
day number. SKYCLOCK will then list the Julian day number, the day of
the week, the age of the moon, and the Roman indiction. You may also
find the date of Easter Sunday and the date of lunar epact according to
both Julian and Gregorian calendars.
File Descriptions:
USER INI Initialization file.
SKY EXE Astronomical ephemeris program.
STARCAT DAT Star catalog file.
CLOCK EXE Calendar date conversion program.
SKY2 ??? On-line help file.
CLOCK1 ??? On-line help file.
SKYCLOCK EXE Main program.
READ ME Program introduction.
PC-SIG
1030D East Duane Avenue
Sunnyvale Ca. 94086
(408) 730-9291
(c) Copyright 1988 PC-SIG, Inc.