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| -rw-r--r-- | src/solar.py | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/solar.py b/src/solar.py index 24370c1..218a38a 100644 --- a/src/solar.py +++ b/src/solar.py @@ -204,6 +204,13 @@ def sun_geometric_mean_longitude(t): @return :float The Sun's geometric mean longitude in radians ''' return radians((0.0003032 * t ** 2 + 36000.76983 * t + 280.46646) % 360) + # CANNIBALISERS and TIME TRAVELERS: + # The result of this function should always be positive, this + # means that after division modulo 360 but before `radians`, + # you will need to add 360 if the value is negative. This can + # only happen if `t` is negative, which can only happen for + # date times before 2000-(01)Jan-01 12:00:00 par division modulo + # implementations with the signess of atleast the left operand. def sun_geometric_mean_anomaly(t): |