def local_from_apparent(self, tee):
"""Return local time from sundial time tee at location, location."""
return tee - Astro.equation_of_time(self.universal_from_local(tee))
def apparent_from_local(self, local_time):
"""Return sundial time from local time at this location."""
return local_time + Astro.equation_of_time(self.universal_from_local(local_time))
