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sidereal.py: A Python package for astronomical calculations

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9.5. JulianDate.__sub__(): Find the difference between two times

The ordinary Python subtract operator works on JulianDate instances. It returns the difference in days between the two values as a float.

Next: 9.6. JulianDate.__cmp__(): Comparison
Contents: sidereal.py: A Python package for astronomical calculations
Previous: 9.4. JulianDate.offset(): Move a time by some number of days
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John W. Shipman
Comments welcome: tcc-doc@nmt.edu
Last updated: 2009-09-24 18:09
URL: http://www.nmt.edu/tcc/help/lang/python/examples/sidereal/JulianDate-sub.html