Jupiter and Saturn Planet Watches, sponsored by Astronomy Ireland. £1 donation to use telescope. Beginning at 8 p.m. at Papal Cross, Phoenix Park, Dublin; Westside Shopping Centre, Galway; Ballyphehane Community Centre, Cork. Planet Watch sponsored by Irish Astronomical Society, Sandymount Tower, Sandymount, 8 p.m.
Dublin: The Astronomy of the Future A lecture by Prof Evert Meurs, Dunsink Observatory, Dublin 15, 8 p.m.
Cork: Breaking Boards A lecture and black belt demonstration, Boole 3, Boole Lecture Complex, UCC, 7 p.m.
Sligo: Technology for the 21st Century Open Day at the School of Engineering Institute of Technology, 10 a.m.-1 p.m.