I want to know the answer to the following question:
What event started the consular year?
All the background I'm provided with is that "The year used in dates during the Roman Republic and the Roman Empire was the consular year, which began on the day when consuls first entered office—probably 1 May before 222 BC, 15 March from 222 BC and 1 January from 153 BC.". Is that enough to answer the question?
Answer: yes