Question: Did Saint Augustine use the Julian calendar?, Answer:Yes, Description of Julian calendar: solar calendar in use from imperial Rome until after the Reformation, Fact1: The Julian calendar was in use from 45 BC to the late 16th century AD, Fact2: Saint Augustine lived from 354 AD to 430 AD
Step1: During what years was the Julian calendar used?, Step2: When did Saint Augustine live?, Step3: Is #2 during the time period listed in #1?, Wikipedia page for step 1: Julian calendar, Wikipedia page for step 2: Saint Augustine, Wikipedia page for step 3: , not_definitive_answer: False, incorrect_answer: False