There's a long weekend coming up. If you were planning on using the time to enjoy some research, be aware that many relevant institutions in the Republic of Ireland will be operating on bank holiday schedules, as below.
The National Archives of Ireland will be closed on Monday 3 June, reopening at 10:00am on Tuesday 4 June.
The Reading Room of the National Library of Ireland will operate to normal weekend hours (Saturday 9:30am to 12:45pm; Sunday closed), but will not open on Monday 3 June.
Exhibitions at the National Library of Ireland will be open on Saturday and Sunday as usual (Kildare Street: Saturday 9.30am–4.30pm; Sunday: 1:00pm–5:00pm. National Photographic Archive in Temple Bar: Saturday 10am–4.45pm; Sunday: 12pm–4.45pm). Bank holiday Monday opening will be from 12pm to 5pm only at both locations.
Dublin City Library & Archive will be closed from Saturday 1 June to Monday 3 June inclusive, as will most local branch libraries in Ireland.
This bank holiday applies only in the South; Northern Ireland institutions will be working to normal hours.