error: redeclaration of 'Sun' in combination with Timezone.h

[AndreasAusD]

Ephemeris.hpp:90:18: error: redeclaration of 'Sun'
Sun = 0,
^

Timezone.h:20:13: note: previous declaration 'dow_t Sun'
enum dow_t {Sun=1, Mon, Tue, Wed, Thu, Fri, Sat};
^