Historical eventDecember 15687

Pope Sergius I

Sergius was elected pope, ending the last disputed period of sede vacante during the Byzantine Papacy.

Everything on December 15Original source

In context

When
Sunday, December 15 6871339 years ago
Category
Historical eventA dated happening — a battle, treaty, launch, discovery, disaster or decision — recorded on this calendar day.
Era
7th century · 680s
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 687.

What happened

Sergius was elected pope, ending the last disputed period of sede vacante during the Byzantine Papacy.

December 15 through the years

Other entries on the same calendar day, in order.

  1. 687Pope Sergius I
  2. 1993The Troubles
  3. 1997Tajikistan Airlines Flight 3183
  4. 2000Chernobyl Nuclear Power Plant
  5. 2001Leaning Tower of Pisa
  6. 2005Lockheed Martin F-22 Raptor
  7. 2010Refugee
  8. 2013South Sudanese Civil War
  9. 2014Man Haron Monis
  10. 20172017 Java earthquake
  11. 2019Citizenship Amendment Act protests

Sources

Cite this page

“Pope Sergius I”, What's On This Date, https://whatsonthisdate.com/app/event/pope-sergius-i-687-december-15, accessed October 28, 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 I happen?

December 15 687 — 1339 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.

Text adapted from Wikipedia under CC BY-SA 4.0 and from Wikidata (CC0). Images come from Wikimedia Commons; credit and licence are shown with each image. Editorial entries are © What's On This Date. Sources & licensing · How this site works.