Year 428 before Christ
previous
Days count
365
First day
Last day
Year -427 started on Monday, January 1 and ended after 365 days on Monday, December 31.
Important events
5th-century BC Greek philosopher
date of birth
date of death
Year 428 before Christ
72 years
4th-century BC Greek philosopher, mathematician, astronomer and statesman
date of birth
date of death
Year 347 before Christ
81 years
incident during the Peloponnesian War (428–427 BC)
start time
end time
Year 427 before Christ
1 year
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