NASA report that tonight's viewing window, during which the ISS will be the brightest object in the night sky, will last four minutes from 9:46 PM in Dublin. Their website provides detailed spotting times for different parts of the country.
The ISS will continue to be visible to the naked eye at various times between now and the 22nd of April as it continues to pass over Ireland.
Commander Chris Hadfield, currently serving a stint on the ISS, has been tweeting pictures of Ireland from space:
A clear Dublin night in early Spring. twitter.com/Cmdr_Hadfield/…
— Chris Hadfield (@Cmdr_Hadfield) April 9, 2013
Tonight's Finale: Our golden lights from Dublin to Paris, Nature's from green aurora to blue dawn. twitter.com/Cmdr_Hadfield/…
— Chris Hadfield (@Cmdr_Hadfield) April 9, 2013
I've played the Road to Sligo many times with an Irish band, but the only time I've seen it was from space. twitter.com/Cmdr_Hadfield/…
— Chris Hadfield (@Cmdr_Hadfield) April 9, 2013