Poole, Reginald S.: Horae Aegypticae: or, the chronology of ancient Egypt: discovered from astronomical and hieroglyphic records upon its monuments, including many dates found in coeval inscriptions from the period of the building of the Great Pyramid to the times of the Persians ; and illustrations of the history of the first nineteen dynasties, shewing the order of their succession, from the monuments (London, 1851)

APPENDIX.

217

The comparison of the numbers under III. and IV. gives the
following:—

VII. Relative positions of the Sun and Moon.

(3.) 2005 b.c., April 8, beginning of civil day,

Moon's longitude...... 357° 4' 56"

Sun's „ ...... 0° 29' 47"

Moon behind Sun......3° 24' 51"

The true conjunction would therefore be about 6h a.m. at Paris,
or about 8h a.m. at Thebes.

The true equinox was on the preceding day.

(4.) 506 b.c., March 27, beginning of civil day,

Moon's longitude...... 342° 37' 49"

Sun's „ . . 359° 37' 32"

Moon behind Sun......16° 59' 43"

March 27 is the day of the equinox: but the conjunction will not
take place till March 28, in the morning.

(5.) 1652 b.c., April 21, beginning of civil day *,

Moon's longitude......194° 49' 39"

Sun's longitude + 180°.....195° 23' 25"

Moon behind opposition..... 0° 33' 46"

The full moon occurs shortly after Paris midnight (i. e. very
early in the morning of April 21).
No eclipse at either of these times.

* * * * *

(Signed) G. B. AIRY.

* This calculation refers to my date of the Exodus, which I intended to
discuss in the present work at the time that I applied to the Astronomer
Royal. R. S. P.