Nutze Skyfield fuer praezisere Daemmerungsberechnung

public/py/vendor/skyfield/tests/test_eclipselib.py

@@ -0,0 +1,16 @@
+from skyfield.api import load
+from skyfield import eclipselib
+
+def test_lunar_eclipses():
+    # The documentation test already confirms the dates of these two
+    # eclipses; here, we confirm that the data structures all match.
+    ts = load.timescale()
+    eph = load('de421.bsp')
+
+    t0 = ts.utc(2019, 1, 1)
+    t1 = ts.utc(2020, 1, 1)
+    t, y, details = eclipselib.lunar_eclipses(t0, t1, eph)
+
+    assert len(t) == len(y) == 2
+    for name, item in details.items():
+        assert len(item) == len(t)