Phase of Moon calculation.
Provides minimal functions to access the phase of the moon as a string or unicode.
pom#calculate(y, m, d)
: Return the phase as a number from 0 to 7pom#phaseFor(y, m, d)
: Return a string for the phasepom#uphaseFor(y, m, d)
: Return a string for the phase, as a unicode characterpom#phase(y, m, d)
: Return a string for the current phasepom#uphase(y, m, d)
: Return a string for the current phase, as a unicode character