We all have calendars. There's the regular Gregorian Roman calendar we all use. Then there's the fiscal year calendar, the school year calendar, religious calendars... But of all the calendars man has come up with, which do you think God uses to plan prophecy and everything else He wants to do? The American calendar? The Chinese calendar? Or maybe the ancient Mayan calendar? Nope. None of the above. God uses the calendar He created for His people. And it's in what we call the bible. It's God's Prophetic Calendar, and it is the calendar He uses to help us understand when His Son is going to come back to rule and reign over this earth.