92 
GEOGRAPHIC TABLES AND FORMULAS. 
Table 13. — For conversion of time into arc. 
[bull. 214. 
Hours of time into arc. 
Time. 
Arc. 
Time. 
Arc. 
Time. 
Arc. 
Time. 
Arc. 
Time. 
Arc. 
Time. 
Arc. 
hrs. 
o 
hrs. 
o 
hrs. 
o 
hrs. 
o 
hrs. 
j - 
o 
hrs. 
o 
1 
15 
5 
75 
J) 
135 
13 
195 
17 
1 255 
21 
315 
2 
30 
6 
90 
10 
150 
14 
210 
18 
270 
22 
330 
3 
45 
7 
105 
11 
165 
15 
225 
19 
285 
23 
345 
4 
60 
8 
120 
12 
180 
10 
240 
20 
300 
24 
360 
Minutes of time into arc. 
Seconds of time into arc. 
m. 
o / 
m. 
O ' 
m 
o / 
s. 
/ a 
s. 
/ // 
, 
/ a 
1 
15 
21 
5 15 
41 
10 15 
1 
15 
21 
5 15 
41 
10 15 
2 
30 
22 
5 30 
42 
10 30 
2 
30 
22 
5 30 
42 
10 30 
3 
45 
23 
5 45 
43 
10 45 
3 
45 
23 
5 45 
43 
10 45 
4 
1 
24 
6 
44 
11 
4 
1 
24 
6 
44 
11 
5 
1 15 
25 
6 15 
45 
11 15 
5 
1 15 
25 
6 15 
45 
11 15 
6 
1 30 
26 
6 30 
46 
11 30 
6 
1 30 
26 
6 30 
46 
11 30 
7 
1 45 
27 
6 45 
47 
11 45 
7 
1 45 
27 
6 45 
47 
11 45 
8 
2 
28 
7 
48 
12 
8 
2 
28 
7 
48 
12 
9 
2 15 
29 
7 15 
49 
12 15 
9 
2 15 
29 
7 15 
49 
12 15 
10 
2 30 
30 
7 30 
50 
12 30 
10 
2 30 
30 
7 30 
50 
12 30 
11 
2 45 
31 
7 45 
51 
12 45 
11 
2 45 
31 
7 45 
51 
12 45 
12 
3 
32 
8 
52 
13 
12 
3 
32 
8 
52 
13 
13 
3 15 
33 
8 15 
53 
13 15 
13 
3 15 
33 
8 15 
53 
13 15 
14 
3 30 
34 
8 30 
54 
13 30 
14 
3 30 
34 
8 30 
54 
13 30 
15 
3 45 
35 
8 45 
55 
13 45 
15 
3 45 
35 
8 45 
55 
13 45 
16 
4 
36 
9 
56 
14 
16 
4 
36 
9 
56 
14 
17 
4 15 
37 
9 15 
57 
14 15 
17 
4 15 
37 
9 15 
57 
14 15 
18 
4 30 
38 
9 30 
58 
14 30 
18 
4 30 
38 
9 30 
58 
14 30 
19 
4 45 
39 
9 45 
59 
14 45 
19 
4 45 
39 
9 45 
59 
14 45 
20 
5 
40 
10 
60 
15 
20 
5 
40 
10 
60 
15 
Hundredths of a second of 
time into arc. 
Hundredths 
of a second 
.00 
.01 
.02 
.03 
.04 
.05 
.06 
.07 
.08 
.09 
of time. 
s. 
// // 
„ 
„ 
n 
// 
ii 
// 
ii 
II 
0.00 
0.00 
0.15 
0.30 
0.45 
0.60 
0.75 
0.90 
1.05 
1.20 
1.35 
.10 
1.50 
1.65 
1.80 
1.95 
2.10 
2.25 
2.40 
2.55 
2.70 
2.85 
.20 
3.00 
3.15 
3.30 
3.45 
3.60 
3.75 
3.90 
4.05 
4.20 
4.35 
.30 
4.50 
4.65 
4.80 
4.95 
5.10 
5.25 
5.40 
5.55 
5.70 
5.85 
.40 
6.00 
6.15 
6.30 
6.45 
6.60 
6.75 
6.90 
7.05 
7.20 
7.35 
0.50 
7.50 
7.65 
7.80 
7.95 
8.10 
8.25 
8.40 
8.55 
8.70 
8.85 
.60 
9.00 
9.15 
9.30 
9.45 
9.60 
9.75 
9.90 
10.05 
10.20 
10.35 
.70 
10.50 
10.65 
10.80 
10.95 : 
LI. 10 
11.25 
LI. 40 
11.55 
11.70 
11.85 
.80 
12.00 
12.15 
12.30 
12.45 ; 
L2.60 
12.75 
L2.90 
13.05 
13.20 
13.35 
.90 
13.50 
13.65 
13.80 
13.95 " 
L4.10 
14.25 " 
L4.40 
14.55 
14.70 
14.85 
