Historical Time Machine
Travel back thousands of years. Explore the most pivotal events of the ancient world and discover what day of the week they occurred.
🔍 On This Day in History
Enter a BC year to see if a major historical event is recorded. For example, type 44 for 44 BC.
📜 Ancient Timeline
🏛️ Unification of Upper and Lower Egypt by King Menes
January 1 — This was a Tuesday
🏗️ Completion of the Great Pyramid of Giza
August 23 — This was a Monday
⚖️ King Hammurabi Enacts the Code of Laws in Babylon
June 10 — This was a Wednesday
🏛️ The Fall of Troy (Traditional Date)
April 24 — This was a Thursday
🏛️ The Founding of Rome by Romulus
April 21 — This was a Monday
🙏 The Birth of Gautama Buddha
April 8 — This was a Monday
🏟️ Establishment of the Roman Republic
September 13 — This was a Wednesday
⚔️ Battle of Marathon: Greeks Defeat Persians
September 12 — This was a Thursday
⚔️ Battle of Gaugamela: Alexander the Great Defeats Persia
October 1 — This was a Friday
🏛️ Qin Shi Huang Unifies China
September 10 — This was a Wednesday
🏛️ Assassination of Julius Caesar (Ides of March)
March 15 — This was a Wednesday
🙏 Estimated Birth of Jesus of Nazareth
December 25 — This was a Tuesday
About BC Weekday Calculations
Whatistheday uses the Proleptic Julian Calendar and established astronomical year numbering to calculate weekdays for ancient dates. For dates before the Gregorian reform of 1582, all weekday results refer to the Julian calendar system. The calculation uses a mathematically extended calendar, which means weekdays are computed accurately for any year — including dates thousands of years in the past.
Searching for "What day of the week was March 15, 44 BC?" or "What day was the founding of Rome?" — our Historical Time Machine provides reliable answers using the same algorithms trusted by historians and astronomers worldwide.