Time in the Republic of Ireland to be the legal time for Great Britain. After the Easter Rising, the time difference between Ireland and Britain was found inconvenient for telegraphic communication and the Time (Ireland) Act, 1916 provided that Irish time would be the same as British time, from 2:00 am Dublin Mean Time on Sunday 1 October 1916. Summer time (daylight saving time) had been introduced in May 1916 across the United Kingdom as a temporary efficiency measure for the First World War, and the changeover from Dublin time to Greenwich time was simultaneous with the changeover from summer time to winter time. John Dillon
Centenary of the Easter Rising Dublin Society and met relatives of the dead, 4,000 of whom attended. President Higgins later attended a 1916 commemoration concert at Liberty Hall Theatre. On the same day, Acting Taoiseach Enda Kenny and Acting Arts Minister Heather Humphreys opened a permanent visitor centre at the General Post Office, scene of rebel occupation in 1916. Also attending was former Taoiseach Liam Cosgrave, whose father W. T. Cosgrave reopened the building in 1929 after it was put back together. A commemorative service was held at the Unitarian Church on St Stephen's Green, with the names of all Dublin fatalities read aloud. The