diff options
| -rw-r--r-- | src/solar.py | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/solar.py b/src/solar.py index 47fd5be..03cb7ce 100644 --- a/src/solar.py +++ b/src/solar.py @@ -437,12 +437,15 @@ def solar_elevation(latitude, longitude, t = None): return degrees(rc) -# TODO test, document and demo +# TODO document and demo def have_sunrise_and_sunset(latitude, t = None): t = julian_centuries() if t is None else t d = degrees(solar_declination(t)) - latitude = abs(latitude) - return (-90 + d < latitude < 90 - d) or (-90 - d < latitude < 90 + d) + latitude = abs(latitude) ## Covert everything to the Northern hemisphere + if d >= 0: + return -90 + d < latitude < 90 - d ## Northern summer + else: + return -90 - d < latitude < 90 + d ## Northern winter def future_past_elevation(delta, latitude, longitude, elevation, t = None): |