1. Timelines and Calendars Man’s Fascination with Time

2. Origins of Calendars • As man began to live in more complex societies, he began to track solar and lunar time. • This was done to mark religious events as well for agricultural purposes. • Virtually all early societies had some form of calendar.

5. Current Calendars • Christian- August 30, 2007 Tracks from the birth of Jesus of Nazareth. • Jewish- Elul 6, 5766 Tracks from the creation of the world. • Islamic- Sha’ban 5 1427 Tracks from the flight of Mohammed from Mecca. (Hegira) • Chinese- 4704 Year of the Dog Tracks from the first emperor. • India- Bhadra 8 Saka Era 1927-28 Lunar/Solar Calendar

6. Most countries use the Christian calendar for business purposes. BC= Before Christ AD= Anno Domini “year of our Lord” Recently and in your texts, a new form is being used. BCE= Before common era CE= Common era Common Date Usage

7. 299 CE 199 BCE 1 BCE/1 CE Using a Timeline • It is a negative number line without a 0. • Time moves forward (left to right). • Instead of zero, there is a common event. • You are either moving towards or away from that event