# Azimuth and Altitude

The following example uses the Skyfield library in python to calculate the azimuth and altitude of Mars above Boston (US) on the 1st March 1980.

```python
from skyfield.api import N,S,E,W, wgs84

# Altitude and azimuth in the sky of a specific geographic location

boston = earth + wgs84.latlon(42.3583 * N, 71.0603 * W, elevation_m=43)
astro = boston.at(ts.utc(1980, 3, 1)).observe(mars)
app = astro.apparent()

alt, az, distance = app.altaz()
print(alt.dstr())
print(az.dstr())
print(distance)

# OUTPUT
# 24deg 30' 27.2"
# 93deg 04' 29.5"
# 0.678874 au
```