---
title: "St. Flannan: Feast Day December 18 · Bless"
url: https://blessbible.app/saints/st-flannan/
description: "St. Flannan, Bishop. Remembered on December 18, died c. 640. Read their life in Bless."
---

Bishop · Remembered on December 18

# St. Flannan

St. Flannan is remembered on December 18 in Bless’s calendar of saints.

|  |  |
|---|---|
| Remembered on | [December 18](https://blessbible.app/saints/december/#18) |
| Title | Bishop |
| Died | c. 640 |
| Next on Bless’s Today screen | [Friday, December 18, 2026](https://blessbible.app/saints/st-flannan/#calendar) |

## Life

An Irish monk of the royal house of Thomond, pilgrim to Rome and first bishop of Killaloe, remembered as a preacher who crossed to the isles — the remote Flannan Isles of the Hebrides bear his name and the ruins of his chapel — and for the blessing he left on his people’s land and cattle.

## In the calendar

The upcoming dates, through December 31, 2028, when Bless’s Today screen shows St. Flannan. Where the US calendar keeps another celebration that day, it is named instead and no rank is given.

| Date | In the US calendar | Color | Mass readings (US) |
|---|---|---|---|
| [Friday, December 18, 2026](https://blessbible.app/calendar/2026/12/18/) | Friday of the Third Week of Advent | Violet | Jeremiah 23:5-8 · Psalm 72:1-2, 12-13, 18-19 · Matthew 1:18-25 |
| [Saturday, December 18, 2027](https://blessbible.app/calendar/2027/12/18/) | Saturday of the Third Week of Advent | Violet | Jeremiah 23:5-8 · Psalm 72:1-2, 12-13, 18-19 · Matthew 1:18-25 |
| [Monday, December 18, 2028](https://blessbible.app/calendar/2028/12/18/) | Monday of the Third Week of Advent | Violet | Jeremiah 23:5-8 · Psalm 72:1-2, 12-13, 18-19 · Matthew 1:18-25 |

Readings

Reading citations through May 31, 2027 are as published in the USCCB liturgical calendar. Later citations were computed by Bless from the US Lectionary cycle — confirm with your parish.

[December 17 St. John of Matha](https://blessbible.app/saints/st-john-of-matha/) [December 19 St. Anastasius I](https://blessbible.app/saints/st-anastasius-i/)

[All the saints of December](https://blessbible.app/saints/december/) [Born on December 18?](https://blessbible.app/saints/birthday/#12-18) [A saint for every day](https://blessbible.app/saints/)

Spotted a mistake in a date, a patronage or a quotation? [Report an error](https://blessbible.app/support/#report) and we’ll fix it in the app and here.

St. Flannan

Remembered on December 18

On this page

1. [Life](https://blessbible.app/saints/st-flannan/#life)
2. [In the calendar](https://blessbible.app/saints/st-flannan/#calendar)

In the app

Bless shows a saint every day on its Today screen, with their life and their words. Free on iPhone.