8 9 20 1 12 23 4

5100 5300 g 15 26 7 18 29 10 21 2 13 24 5 16 27 8 19 * 11 22 3
5400 5500 5600 f 14 25 6 17 28 9 20 1 12 23 4 15 26 7 18 29 10 21 2
5700 5800 e 13 24 5 16 27 8 19 * 11 22 3 14 25' 6 17 28 9 20 1
5900 6000 6100 d 12 23 4 15 26 7 18 29 10 21 2 13 24 5 16 27 8 19 *
6200 6400 c 11 22 3 14 25 6 17 28 9 20 1 12 23 4 15 26 7 18 29

6300 6500 b 10 21 2 13 24 5 16 27 8 19 * 11 22 3 14 25' 6 17 28
6600 6800 a 9 20 1 12 23 4 15 26 7 18 29 10 21 2 13 24 5 16 27
6700 6900 P 8 19 * 11 22 3 14 25 6 17 28 9 20 1 12 23 4 15 26
7000 7100 7200 N 7 18 29 10 21 2 13 24 5 16 27 8 19 * 11 22 3 14 25'
7300 7400 M 6 17 28 9 20 1 12 23 4 15 26 7 18 29 10 21 2 13 24

7500 7600 7700 H 5 16 27 8 19 * 11 22 3 14 25 6 17 28 9 20 1 12 23
7800 8000 G 4 15 26 7 18 29 10 21 2 13 24 5 16 27 8 19 * 11 22
7900 8100 F 3 14 25 6 17 28 9 20 1 12 23 4 15 26 7 18 29 10 21
8200 8300 8400 E 2 13 24 5 16 27 8 19 * 11 22 3 14 25' 6 17 28 9 20
1500 1600 8500 D 1 12 23 4 15 26 7 18 29 10 21 2 13 24 5 16 27 8 19

As an example of the use of the preceding tables, suppose it were required
to determine the moon's age on the 10th of April 1832. In 1832 the golden
number is ((1832 + 1) / 19)_r = 9 and the line of epacts belonging to the
century is C. In Table III, under 9, and in the line C, we find the epact
28. In the calendar, Table IV., look for April, and the epact 28 is found
opposite the second day. The 2nd of April is therefore the first day of the
moon, [v.04 p.0997] and the 10th is consequently the ninth day of the moon.
Again, suppose it were required to find the moon's age on the 2nd of
December in the year 1916. In this case the golden number is ((1916 + 1) /
19)_r = 17, and in Table III., opposite to 1900, the line of epacts is B.
Under 17, in line B, the epact is 25'. In the calendar this epact first
occurs before the 2nd of December at the 26th of November. The 26th of
November is consequently the first day of the moon, and the 2nd of December
is therefore the seventh day.

_Easter._--The next, and indeed the principal use of the calendar, is to
find Easter, which, according to the traditional regulation of the council
of Nice, must be determined from the following conditions:--_1st_, Easter
must be celebrated on a Sunday; _2nd_, this Sunday must _follow_ the 14th
day of the