BC-AD and BCE-CE are different dating systems used to label years. BCE stands for Before Common Era and is equivalent to BC, while CE stands for Common Era and is equivalent to AD. AD stands for Anno Domini, which is Latin for "in the year of our Lord" and refers to years since the proposed birth of Jesus Christ. Notation for BC, BCE, AD and CE is always placed after the year or period mentioned.

1. BC-AD
v/s
BCE-CE,

2. BCE BEFORE COMMON ERA Equivalent to BC
CE COMMON ERA Equivalent to
AD
BC BEFORE CHRIST Before the birth of Jesus Christ
AD ANNO DOMINI
A Latin phrase that means ‘in the year of
our lord’

3. What is AD?
• stands for Anno Domini - a Latin phrase
for “in the year of our Lord” (the year
Jesus Christ was born)
• Does not stand for After Death
• Notation always comes before the year
but comes after when mentioning a
period
• In 525 AD, Dionysius Exiguus, a Scythian
Christian Monk proposed the idea of
using Jesus’s birth as the frame of
reference for identifying the years.
• AD 300
• 3rd century AD
• 2nd millenium AD
• We are living in 21st century AD.
• Thomas Edison invented first light bulb in
AD 1879.
Examples

4. What is BC?
• stands for Before Christ
• Notation always comes after the year or
the period
• 300 BC
• 3rd century BC
• 2nd millenium BC
• Constriuction of The Great Wall of China
started in 214 BC and completed in 204
BC.
Examples

5. What is CE?
• stands for Common Era or Current Era.
• Uses Christ’s birth indirectly as the point
of reference; Christ's Birth is the Common
Era
• CE = AD
• Notation always comes after the year or
the period
• 300 CE
• 3rd century CE
• 2nd millenium CE
• We are living in 21st century CE.
• Thomas Edison invented first light bulb
in CE 1879.
Examples

6. What is BCE?
• stands for Before Common Era or Before
Current Era
• Uses Christ’s birth indirectly as the point
of reference; Christ's Birth is the Common
Era
• BCE = BC
• Notation always comes after the year or
the period
• 300 BCE
• 3rd century BCE
• 2nd millenium BCE
• Constriuction of The Great Wall of China
started in 214 BCE and completed in 204
BCE.
Examples

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