Enter the YEAR BC AD

Enter geographic LONGITUDE
DEGREES MINUTES EAST WEST

Enter geographic LATITUDE
DEGREES MINUTES NORTH SOUTH

Enter the altitude of the STAR
(Altitude = magnitude)

Select a STAR
ALCYONE ALDEBARAN ALNILAM ALPHARD ANTARES ARCTURUS CANOPUS CAPELLA CAPH CASTOR DUBHE dzeta_SCO epsilon_TAU HAMAL PHACT pi_SCO POLLUX PROCYON REGULUS RIGIL_KENTAURUS SADALMELIK SADALSUUD SCHEDAR SHERATAN SIRIUS SPICA VEGA ZUBEN_ELGENUBI ZUBEN_ESCHAMALI OTHER
if you have clicked on "OTHER", you must enter data
in another formulary (under the output windows)

Results will appear underneath

The historians use the julian calendar. However, the gregorian calendar is the only one
allowing to locate easily a phenomenon with regard to the seasons (equinoxes and solstices).
Example: spring equinox in 1950 BC
March 21^st in the gregorian calendar ; April 7^th in the julian calendar -------------------------------------------------------------------------------
if you have clicked on "OTHER" in the stars list,
you must enter the following data:

Right ascension (in 2000 AD)
Hours Minutes Seconds

Declination (in 2000 AD) Always positive (select North-South)
Degrees Minutes Seconds NORTH SOUTH

Visual magnitude

Proper motion in right ascension (seconds of time / year)
East : +
West : -

Proper motion in declination (seconds of arc / year)
North : +
South : -

Radial velocity (in Km/second)
Receding : +
Nearing : -

Distance in parsecs (1 parsec = 3.26 light years)

You can now click on RUN (hereabove)