D

PLANETS' GEOCENTRIC RIGHT ASCENSIONS, DECLINATIONS, &c.
Mars. 2 Jupiter. h Saturn.
7h. m. о
h. m. O

Mercury.

Venus.

h. m. о 7h. m. O /h. m.

116 40 21 S 918 5424 S 4112 2 1 N39 15 5919 S 50 17 27 22 S 10

Remarkable Days.

1Tu Rt. Asc. 16h. 31m. 2W O inf. 24 r. 7 m 0 3Th Ceti Sou. 7 a 55

4F Day breaks 5 m 45

decl. decl.

97 473 5210 3621s53 10s 37 107 483 5210 1322 2 5 3 117 493 51 9 4922 11 On54 127 513 51 9 2522 19 6 59

5S Sou.7 m 13: alt. 40° 137 523 50 9 022 2612 58 62 Sun. in Advent 157 533 50 8 3422 3418 30 OH. [Nicholas 167 543 50 8

7M

6

822 4023

177 553 49 7

42 22

47 26 15

187 573 49 7
197 583 49 6
207 593 49 6 2023
03 49 5 5223
03 49 5 23 23
13 49 4 5523 15 8 11
23 49 4 26 23 19 2
33 49 3

8 Tu Concept. B. V. Mary 9WD in Perigee. 10 Th Algenib Sou. 6 a 46 11F9 Sou. 2 a 26: alt. 15° 12S HRt. Asc. 23h. 12m. 218 133 Sun. in Adv. Lucy 228 14MH Dec. South 5° 59' 238 15 Tuoh. ris. 0 m 53 248 16 W Ember Week. O Sap.! 258 17 Th Ox. T. e. [Camb. T. e. 268 18 F 6. rises 6 m 1 278 19S Venus sets 6 a 45

53 50 2 27 23

63 51 1 57 23

1214 8

2

56 23 21 4s 1

288

27 19 29

21 M St.Thomas. Short. D.

vs 8

22 Tu

great. elong. 22° W.

18

23 W Moon in Apogee

28

73 53 0 27 23 27 27 27

24 Th

Sou. 2 a 41 : alt. 19°

38

25 F Christmas Day. O 48

LUNATIONS AND WEATHER.

First Quarter, 2d, 18m. past 7, morn.-Stormy weather.
Full Moon, 9th, 17m. past 4, morn.-Rain or snow.
Last Quarter, 15th, 4m. past 9, night.-Fair and frosty.
New Moon, 23d, 24m. past 9, night.-Rain or snow.

First Quarter, 31st, 50m. past 10, night.-Fair and frosty.

5 5010 33

A TABLE of the ANGLES between the

7 21 11 38 MERIDIAN and the HOUR-LINES, for the

construction of SUN-DIALS.

HORIZONTAL DIALS.

21

4 5 27

6 20 9 59

V VII
VI

65 30 64 24

90 0 90 0 90 0 90 0

7 24 10 49
sets 11 40 are got by continuing the opposite hour-lines through

28 429 24 9 3 1 4a 4 25 21 2 2 5 13

26

28

29*

30

31

0a31

1 20

15N 4 7 38

27 15 8 51 3 34

9 2 610 4 4 16

22 3 711 19 4 58 r 5 4 812 34 5 41

Time of High-Water at London Bridge in the Morning of every Day in the Year.

Days

Jan.

Feb. Mar. April May June July Aug. Sep. Oct. Nov. Dec. m.h. m. h. m. h. m. h. m. b. m.in. m. h. m. h. m. h. m. h. m.h, m.

Days

b.

NOTE. If to the Time of High-Water at London Bridge, as given in the above Table, you add the hours and minutes corresponding to any Place mentioned below, you have the Time of High-Water at that Place. At Aberdeen Bar, the Time of HighWater happens 11 hours 5 minutes after the Time of High-Water at London; at Aberdovy, 5 hours and 23 minutes after, &c. &c.

2

5 14 3 12

1 18 23 13

21 15

19

566VOGAN-Days.

TABLE I.-The Mean Solar Time of the Southing of the First Point of Aries.

Jan. Feb. Mar. April. May. June July. Aug. Sept. Oct. Nov. Dec.

h. m.h. m.h. m.h. m.h.

m. h. m. h. m. h. m. h. m. h. m. h. m. h. m.]

5 18 3 16 1 22 23 17 21 19 19 17 17 19 15 17 13 1511 17 9 15 7 17

Days.

13 17 15 15

13 13 1111 13 9 11 7 13

2

917 11 15

513 311

117

57 16

18 53 16

18 49 16

18 45 16

TABLE II.-The Right Ascensions, Declinations, &c. of the Fixed Stars.

Observe. From the above Tables the approximate Time of the Southing of the principal Fixed Stars may he easily found, as follows:-Add, to the Mean Solar Time of the Southing of the First Point of Aries, the hours and minutes of the Right Ascension of any given Star, and the result will be the Mean Time from Noon of its Southing, or passing the meridian. When the result exceeds 24 hours, then subtract from it 24 hours, and the remainder will be the time sought from Noon. It is almost unnecessary to say, when the Southing of a star comes out 13 hours, it is the same as one o'clock in the morning, and when 14 hours, two o'clock, &c.

Note. This method will answer equally for the Southing of the Planets, by using their Right Ascension as given on the top of the Months of the Calendar.

The Sun's semidiurnal Arcs, or Times of his visible Half. Duration above the Horizon, by which the Sun's Rising and Setting may be found in any part of the Kingdom. THE SUN'S DECLINATION NORTH.

Degrees.

Lat. Lat. Lat. Lat. Lat. Lat. Lat. Lat. Lat. Lat. Lat.
N.50° N.51° N.529 N.539 N.54° N.55° N.56° N.57° N.580 N,590 N.600

[h. m. h. m. [h. m. h. m. h. m. h. m. h. m. h, m. h. m. h. m. h. m.

0

6

416 416 416 416 416 4

Degrees.

01234

3816

6 32 6

33 6

34 6

36 6

37 6

38 6

40 6

41 6

43 6

6 37 6

38 6

40 6

41 6

43 6

44 6

46 6

48 6

Explanation. Find the Sun's Declination, north or south, in the Calendar pages, for the day required; then look into the first or last column of this Table for the corresponding number of degrees; and in the same line, under the latitude of the place required, will be found the hours and minutes of the sun's setting; subtract the same from twelve hours, and you have the time of his rising: double the hours and minutes of setting, and you have the length of the day: subtract the same from 24 hours, and the remainder is the length of the night.

Note.-This Table gives the Sun's rising and setting for apparent time: to which, if the equation of time, given in the Calendar, be applied, the result will be the true clock time.