Interactive Computer Ephemeris
(Discontinued)
ICE, the Interactive Computer Ephemeris, is
a computer almanac program for PCs that was developed at
the Naval Observatory in the late 1980s. It was essentially
a version of the then-popular
Floppy Almanac that
provided data for extended periods of time. A "beta" version (ICE
version 0.5) was tested by a group of users and very
few problems were encountered. However, in 1990, for
administrative reasons, it was decided not to continue
development of the product. The known problems were fixed and a
final version of the software (ICE version 0.51) was produced and
made available to those users who had tested version 0.5. At that time,
those users were notified that further development, distribution, and
support of the product by the Naval Observatory would cease.
Therefore, ICE is not now distributed by the U.S. Naval
Observatory. The Naval Observatory does not provide technical
support for the product, nor does it warrant it in any way.
However, because of its history, the program is in the public
domain and is available through commercial and other sources.
The Naval Observatory does not have any connection to or control
over these sources. Apparently ICE versions 0.5 and 0.51 are
both available; version 0.51 is the better of the two, although
most users will not encounter any differences. If you have
obtained ICE version 0.5 from a commercial or other source, and
wish to obtain version 0.51, you should contact your source.
If you need an accurate computer-based almanac from the Naval
Observatory, you should consider obtaining
MICA,
the Multiyear
Interactive Computer Almanac. MICA has a much more modern user
interface than does ICE, and provides a wider range of tabulations.
MICA is available for both PCs and Macintosh systems.