There are two biblical facts showing the start of the year is in the spring. In Genesis 1:14-17 God gives the purpose of His heavenly orbs that were set to keep track of time. Verse 17 reveals that He set them in their starting positions, like setting a clock to the right time. Setting the heavenly clock accounted for the first day of creation, meaning that the sun and the moon would have to have the starting point to be the first day of the seven day week, (a Sunday).
Biblical Timeline Chart FULL
View the full timeline to see significant dates and events from Genesis to 70AD!