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diff --git a/iss.py b/iss.py
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+++ b/iss.py
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+from skyfield.api import Topos, load
+
+stations_url = 'http://celestrak.com/NORAD/elements/stations.txt'
+satellites = load.tle_file(stations_url)
+print('Loaded', len(satellites), 'satellites')
+
+by_name = {sat.name: sat for sat in satellites}
+satellite = by_name['ISS (ZARYA)']
+print(satellite)
+
+tlv = Topos('32.0853 N', '34.7817 E')
+
+ts = load.timescale()
+t0 = ts.utc(2020, 9, 20)
+t1 = ts.utc(2020, 9, 30)
+
+t, events = satellite.find_events(tlv, t0, t1, altitude_degrees=60.0)
+for ti, event in zip(t, events):
+    name = ('rise above 30°', 'culminate', 'set below 30°')[event]
+    print(ti)
+    print(ti.utc_strftime('%Y %b %d %H:%M:%S'), name)