MoonCalc provides information relating to the position, age, phase, orientation, appearance and visibility of the moon for any given date, time and location on earth. It also provides the time and direction of moonrise and moonset, interval between sunset and moonset, interval between sunrise and moonrise, date/time of astronomical new moon (conjunction)and full moon and predicts the likelihood of visualising the young moon from a particular location. MoonCalc provides Hijri calendar data including location dependent Hijri date conversion using predicted lunar visibility.

The program can scan the globe at the start of any lunar month to find the location, date/time and direction of earliest crescent sighting using a variety of ancient and modern moon sighting criteria. The program is able to draw world maps (flat and spherical projections)showing areas of the globe where the young moon is likely to be seen. Graphical displays showing the position of the moon on a star chart and the position of the moon in a simulated local sky can be produced and printed out. A close-up of the near side of the moon (showing orientation of the moon's limbs and position of the lunar craters), correct for a given observation site, is also provided. This close up takes into account the effect of libration and 'limb shortening'(optional).

There is a choice of either topocentric/geocentric co-ordinates and apparent/geometric sunset. Correction for atmospheric refraction is optional. The program has a built in atlas database which stores latitude and longitude data of upto 1000 cities (ships with about 100 cities already entered). There are many user-configurable features.

 

http://www.ummah.org.uk/ildl/mooncalc.html

 

MoonCalc was developed over a period of 4 years and continues to be in a

state of constant development. The program has given me a lot of pleasure

to write and I hope very much that you enjoy using MoonCalc and find it

useful.

Users of MoonCalc are encouraged to test the various functions

of the program and compare the data produced by the program with actual

sightings of the moon, particularly sightings of the crescent moon. All

suggestions and comments which may improve the program are welcomed.

Computer Research Center of Islamic Sciences
Moallem Street, shohada SQ, POB 37185-3857, Qom ,Iran
Tel: 0098-0251-743304, 0098-0251-743413
Fax: 0098-0251-743414

The C.R.C.I.S. was established to promote and facilitate research
in Islamic Sciences by and under the supreme direction of His
Highness Ayatollah Khameneyee (May God Bless Him), in 1988
(A.D.).

The completed projects since the establishment of the Center are
as follows:

(THE NOOR SOFTWARE PACKAGES)
THE WORD LEXICONS

THE EXEGESIS
    The Holy Quran
    The Almizan Exegesis

THE HADITH BOOKS
    The Arba-ah Kotob
    The Vasa-elul-Shi-ah
    The Mostadrakul-Vasa-el
    The Beharul-Anvar
    The Books of the Late Sheykh Mofid
    (may God be pleased with him)
    Plus more than 120 other titles
    (Sourses & Origins of the Behar)

THE OSUL BOOKS
    The Favayedul-Osul
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    The Farayedul-Osul

(THE SUBJECT LEXICONS)
THE PHYLOSOPHICAL BOOKS
    The Nahayatul-Hekma
    The Amoozesheh-Phalsapheh (Instruction of Phylosophy)
    The Bedayatul-Hekmah
    The Al-Loma-atul-Mashreghi-yah
    The Al-Asfarul-Arba-ah
    The Principle of Phylosophy & Method of Realism

THE LOGIC BOOKS
    The Manteghul-Mashreghi-yeen
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THE JURISPRUDENCIAL BOOKS
    The Sharhul-Lomatul-Dameshgi-yah
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THE REJAL LEXICON
    The Shi-ah Arba-ah Kotob
    The Kashi Rejal
    The Najashi Rejal
    The Shekh-Toosi Fehrest
    The Sheikh Toosi Rejal