Historical eventDecember 27537

Hagia Sophia

The reconstructed Hagia Sophia in Constantinople was inaugurated; built as a church, it later became a mosque and a museum.

Everything on December 27Original source

In context

When
Sunday, December 27 5371489 years ago
Category
Historical eventA dated happening — a battle, treaty, launch, discovery, disaster or decision — recorded on this calendar day.
Era
6th century · 530s
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 537.

What happened

The reconstructed Hagia Sophia in Constantinople was inaugurated; built as a church, it later became a mosque and a museum.

December 27 through the years

Other entries on the same calendar day, in order.

  1. 537Hagia Sophia
  2. 20022002 Grozny truck bombing
  3. 2004Radiation
  4. 2007Mombasa
  5. 2007Prime minister
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  7. 2008Gaza War (2008–2009)
  8. 20092009 Iranian presidential election protests
  9. 2019Bek Air Flight 2100
  10. 2024President of South Korea
  11. 20252025 Gelsenkirchen heist

Sources

Cite this page

“Hagia Sophia”, What's On This Date, https://whatsonthisdate.com/app/event/hagia-sophia-537-december-27, 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 Hagia Sophia happen?

December 27 537 — 1489 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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