Using Timelines to Understand History
The Gregorian Calendar Invented by the Romans. Improved by Pope Gregory XIII – he added Leap Year. Events are relative the date that Christians believed Jesus was born.
Other Calendars It is currently the year: 2014 on the Christian calendar 5775 on the Hebrew calendar 1435 AH on the Islamic calendar Year of the Horse on the Chinese calendar
The Gregorian Calendar BC = “Before Christ” AD = “Anno Domini” – No, it does not mean “after death”. – Latin meaning: “the year of our lord”. – This year is 2014 years since Christians believe Jesus was born.
The New System BCE means “Before the Common Era” 44 BCE = 44 BC CE means “Common Era” 2014 CE = 2014 AD
Similar to Number Lines CE2 BCE1 BCE2 CE3 CE
Relative Time YA = “years ago” Dinosaurs died out 65 million YA Earliest humans: 4 million YA
Rough Estimates of Dates Ca. = circa = “around the time of” Remember: circa sounds like “circle” which is round. First stone tools were made ca. 2 million years ago.