Northern Ireland
PRONI, Belfast
The Public Record Office of Northern Ireland will close at 2pm on Tuesday 24 December, reopening on Monday 30 December at 9am. Normal hours 30 and 31 December. Closed Wednesday 1 January, reopening at 10am on Thursday 2 January. Note also non-standard hours (10am to 4:45pm) on Thursday 19 December and the first Thursday of the New Year 2 January.Presbyterian Historical Society of Ireland, Belfast
Library and Archive closed from Thursday 19 December to Monday 6 January inclusive. Reopens Tuesday 7 January 2020.
North of Ireland Family History Society Library, Newtownabbey
(Normally open Tuesdays and Thursdays only.) Closed from 8pm on Tuesday 17 December to 2pm on Tuesday 7 January 2020.
Dublin
National Archives of Ireland, Dublin 8
The Reading Room and Genealogy Advisory Service will close at 12:30pm on Tuesday 24 December and re-open at 10am on Thursday 2 January 2020.
RCB Library, Churchtown, Dublin 14
Library closing at 1pm on Friday 20 December and re–opening to standard hours (9:30am to 1pm and 2pm to 5pm) on Thursday 2 January 2020. (No access to archives or manuscripts on Fridays will continue for the foreseeable future.) Note: On Friday 10 January the Library will be closed all day for staff training.
National Library of Ireland, Dublin 2
Reading Rooms will close on Monday 23 December at 7.45pm and reopen on Thursday 2 January at 9.30am. Genealogy Advisory Service will close on Monday 23 December at 4.45pm, reopening Thursday 2 January at 9.30am. Exhibitions: Temple Bar and Kildare Street exhibitions (From Turmoil to Truce; WWIreland; Yeats) open noon to 5pm on Friday 27, Monday 30, and Tuesday 31 December. Seamus Heaney, Listen Now Again exhibition open 10am to 4pm on Saturday 28, Monday 30, and Tuesday 31 December.
Military Archives, Dublin 6
Closed to the public from 19 December. Reopening 10am on Tuesday 7 January 2020.
Dublin City Library and Archive, Dublin 1
Closed from 8pm on Monday 23 December until 10am Thursday 2 January 2020.
An Daonchartlann, Loughlinstown, Dún Laoghaire, Co Dublin
Archive & Research Centre of the Genealogical Society of Ireland (Wednesdays only in winter). Open until 4pm on Wednesday 18 December, then closed until 10:30am on Wednesday 8 January.
London
The National Archives, Kew.
Closed Monday 23 December to Thursday 26 December inclusive. Open Friday 27 and Saturday 28 December for normal hours. Closed Monday 30 December. Open Tuesday 31 December from 9am to 5pm (no late night). Closed Wednesday 1 January. Reopening to standard timetable on Thursday 2 January.
Society of Genealogists, EC1.
No late night on Thursday 19 December; library will close at 6pm. Open 10am to 6pm on Saturday 21 December and 10am to 3pm on Tuesday 24 December. Then closed until standard timetable returns on Thursday 9 January.
The Irish Genealogical Research Society Library, EC1
(Saturday afternoons only throughout year) at the Society of Genealogists: Open 1:30pm to 5:30pm on Saturday 21 December. Closed Saturdays 28 December and 4 January. Reopens for standard Saturday openings (1:30pm–5:30pm) from 11 January.