My birthday sometimes falls on Father's Day and Abi's sometimes falls on Mother's Day. I was wondering if this would this ever happen in the same year. Here's the answer:

parent_days.py

#!/usr/bin/env python
from datetime import date

def fday_on_jons_bday(year):
	return [d for d in range(15,22) if date(year, 6, d).weekday() == 6][0] == 16

def mday_on_abis_bday(year):
	return [d for d in range(8,15) if date(year, 5, d).weekday() == 6][0] == 14

j_years = filter(lambda d: fday_on_jons_bday(d), range(2007,2078)) # F's bday to J's birth year + 100
a_years = filter(lambda d: mday_on_abis_bday(d), range(2007,2074)) # F's bday to A's birth year + 100
print j_years
print a_years
print set(j_years).intersection(set(a_years))