Test the third Tuesday of a monthΒΆ

Test the third Tuesday of a month.
from datetime import datetime

def is_third_tuesday(S):
    d = datetime.strptime(S, '%b %d, %Y')           # datetime.datetime(2015, 6, 23, 0, 0)
    return d.weekday() == 1 and 14 < d.day < 22     # 1

# test
print(is_third_tuesday('Jun 23, 2015'))   # False
print(is_third_tuesday('Jun 16, 2015'))   # True
print(is_third_tuesday('Jul 21, 2015'))   # True