@spiceErrorCheck<EOL>def unitim(epoch, insys, outsys):
epoch = ctypes.c_double(epoch)<EOL>insys = stypes.stringToCharP(insys)<EOL>outsys = stypes.stringToCharP(outsys)<EOL>return libspice.unitim_c(epoch, insys, outsys)<EOL>
Transform time from one uniform scale to another.  The uniform
time scales are TAI, TDT, TDB, ET, JED, JDTDB, JDTDT.

http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/unitim_c.html

:param epoch: An epoch to be converted.
:type epoch: float
:param insys: The time scale associated with the input epoch.
:type insys: str
:param outsys: The time scale associated with the function value.
:type outsys: str
:return:
        The float in outsys that is equivalent
        to the epoch on the insys time scale.
:rtype: float