On Time

August 2018 A.D.

What happened in 1 A.D.?

A.D.
=
Anno Domini
(In the year of the Lord)

B.C.
=
Before Christ

Were all cultures immediately aware of and deeply influenced by the life of Jesus?

For non-Christian cultures, what kinds of events might count as "year 1"?

175

1439

4716

5120

5778

12018

13,770,000,000

A.D. and B.C.

• Due to the dominance of Western culture, the "Gregorian Calendar" remains the common global system.

A.D. = C.E.

B.C. = B.C.E.

Is 2018 A.D./C.E.
in the 20th century
or the 21st century?

Names of Centuries

• 22nd c. = 2100s CE
• 21st c. = 2000s CE
• 20th c. = 1900s CE
• 19th c. = 1800s CE
• 18th c. = 1700s CE

Name of Century
=
1 + Hundreds Unit of Year

Century Name = 1 + Hundreds Unit

• 2018 CE
• Hundreds Unit = 0
• 1 + 0 = 1
• Combine with Thousands Unit
• "21st Century"

Name the century!

1600 CE

1492 CE

2200 CE

1000-1099 CE

800 CE

100 CE

1-99 CE

1-99 CE

100 BCE

800s BCE

1000 BCE

2000 BCE

3761 BCE