Nutze Skyfield fuer praezisere Daemmerungsberechnung

public/py/vendor/skyfield/api.py

@@ -0,0 +1,36 @@
+"""Top-level objects and functions offered by the Skyfield library.
+
+Importing this library is not always the fastest way to use a Skyfield
+feature, since importing this module involves importing almost the
+entirety of Skyfield and its dependencies, but is the most convenient
+way for most users to use Skyfield's main features.
+
+"""
+from datetime import datetime
+from .constants import B1950, T0, pi, tau
+from .constellationlib import load_constellation_map, load_constellation_names
+from .iokit import Loader, load_file
+from .planetarylib import PlanetaryConstants
+from .positionlib import SSB, position_from_radec, position_of_radec
+from .starlib import Star
+from .sgp4lib import EarthSatellite
+from .timelib import (
+    GREGORIAN_START, GREGORIAN_START_ENGLAND, Time, Timescale, utc
+)
+from .toposlib import Topos, iers2010, wgs84
+from .units import Angle, Distance, Velocity, wms
+
+load = Loader('.')
+N = E = +1.0
+S = W = -1.0
+
+__all__ = [
+    'Angle', 'B1950', 'Distance', 'E', 'EarthSatellite',
+    'GREGORIAN_START', 'GREGORIAN_START_ENGLAND',
+    'Loader', 'PlanetaryConstants', 'N', 'S', 'SSB', 'Star', 'W',
+    'T0', 'Time', 'Timescale', 'Topos', 'Velocity',
+    'datetime', 'iers2010', 'load', 'load_constellation_map',
+    'load_constellation_names', 'load_file',
+    'position_from_radec', 'position_of_radec',
+    'utc', 'pi', 'tau', 'wgs84', 'wms',
+]