1700th anniversary: The First Council of Nicaea, the first ecumenical council of the Christian...
History · Anniversaries · Tue, May 20, 2025
325: The First Council of Nicaea, the first ecumenical council of the Christian Church, was formally opened by Constantine the Great.
Also on May 20, 2025
| Date | Event | When |
|---|---|---|
| Tue, May 20, 2025 | Current 2025 - London | 16 mo ago |
| Tue, May 20, 2025 | SAP Sapphire Virtual 2025 | 16 mo ago |
Source, method and history
- Source
- Wikipedia
- How we know
- Wikipedia "On this day" selected anniversary, 1700 years (325 to 2025).
- Recurs
- annual
- Feed
- Subscribe to Anniversaries
- Changes
- None recorded.
Sources: official schedules and published calendars, linked on every event; computed dates name their rule. Refreshed nightly.