The original series focused on the 1980s and first aired on Monday nights from 6 September to 8 November 1999

The second series focused on the 1990s and first aired on Monday nights from 11 September to 27 November 2000 except on 30 October and 13 November.

The third series focused on the 1970s and first aired on Tuesday nights from 10 September to 12 November 2002.

The fourth series focused on the 1960s (1962 to 1969 only) and first aired on Friday nights from 10 September to 29 October 2004. It features neither 1960 nor 1961 as these pre-date the official launch of Telefís Éireann, the television arm of the national broadcaster. It was felt, presumably, that there would be too little archive material from which to make an engaging programme about these years. Indeed, the episodes covering the first half of the 1960s are characterised by extensive use of photographs and posters, as opposed to film and video footage, to represent various historical events.

The fifth series focused on the 2000s and first aired on Sunday nights from 17 October to 26 December 2010 except on 28 November.