Geographic coordinate system
Length of a degree

Latitude
City
Degree
Minute
Second
±0.0001°
60°
Saint Petersburg
55.80 km
0.930 km
15.50 m
5.58 m
51° 28′ 38″ N
Greenwich
69.47 km
1.158 km
19.30 m
6.95 m
45°
Bordeaux
78.85 km
1.31 km
21.90 m
7.89 m
30°
New Orleans
96.49 km
1.61 km
26.80 m
9.65 m
0°
Quito
111.3 km
1.855 km
30.92 m
11.13 m

Question: At 0° latitude, what is the length of a degree, minute, and second?
Answer: In geographic coordinate system, on the Equator, one second measures 30.92 metres, a minute is 1855 metres and a degree is 111.3 kilometres.