Historical eventJuly 311009

Pope Sergius IV

Sergius IV became the 142nd pope, succeeding John XVIII.

Everything on July 31Original source

In context

When
Sunday, July 31 10091017 years ago
Category
Historical eventA dated happening — a battle, treaty, launch, discovery, disaster or decision — recorded on this calendar day.
Era
11th century · 1000s
Calendar
Julian — as recorded at the time
Recorded from
Wikipedia “On this day” feed

Dates before 15 October 1582 are in the Julian calendar, so the weekday shown follows the Julian reckoning of the time.

At a glance

Dates: From 1009.

What happened

Sergius IV became the 142nd pope, succeeding John XVIII.

July 31 through the years

Other entries on the same calendar day, in order.

  1. 1009Pope Sergius IV
  2. 2002Hamas
  3. 2006Fidel Castro
  4. 2007The Troubles
  5. 2007Operation Banner
  6. 2008East Coast Jets Flight 81
  7. 20122012 India blackouts
  8. 2012Michael Phelps
  9. 20142014 Kaohsiung gas explosions
  10. 20202020 Alaska mid-air collision
  11. 2020De Havilland Canada DHC-2 Beaver

Also in 1009

  • March 9Name of LithuaniaThe first recorded use of the name of Lithuania appeared in Latin in the Annals of Quedlinburg, written in Saxony-Anhalt, present-day Ger…

Everything we record for 1009 →

Sources

Cite this page

“Pope Sergius IV”, What's On This Date, https://whatsonthisdate.com/app/event/pope-sergius-iv-1009-july-31, accessed October 24, 2026.

Cite the underlying source as well — the source links above go to the record this entry is adapted from.

Questions about this entry

When did Pope Sergius IV happen?

July 31 1009 — 1017 years ago, on a Sunday.

Is this a Julian or a Gregorian date?

It is the date as recorded at the time, on the Julian calendar. The Gregorian equivalent falls about ten days later; sources from different countries may give either.

Where does this text come from?

Wikipedia “On this day” feed. Summaries are short adaptations that link back to the source, not reprints.

How do I cite this page?

Use the ready-made citation near the sources at the bottom of the page, and follow the source link to cite the underlying record as well.

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