Venus .7 AU & Mercury .4 AU. Venus' orbit of 224.7 days = 7.4 avg months (30.4 days each). These observations have been known for a couple of centuries. When we add them to the ancients' observations of the 7 Planets (7 moving objects/7 Luminaires/7 Heavens)/4 can't be easily seen during the day/4 don't cast shadows on Earth and the 4 primary lunar phases of roughly 7 days (~7.4 days) each - 4 weeks in a 'moonth', lunar year + 7 day week + 4 days = solar year, etc., we see a definite pattern.
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