Counselling services across the country are on stand-by as survivors of clerical abuse mark the first anniversary of the harrowing Ryan Report.
The Dublin Rape Crisis Centre and Health Service Executive (HSE) said they were among the agencies anticipating an increase in the number of calls from survivors of abuse over the next few days.
The damning Ryan Report revealed the Roman Catholic Church and Irish Government covered up almost four decades of sexual abuse and beatings by priests and nuns against thousands of children in state care.
The report also documented a catalogue of disturbing and chronic sexual, physical and emotional torture inflicted on disadvantaged, neglected and abandoned youngsters by both religious and lay staff.
A survivor of institutional abuse, Christine Buckley, said May 20 will always be a significant and memorable date.
"It took 25 years and one day for us to be believed and vindicated," said Ms Buckley, director of the Aislinn Education & Support Centre where the date will be marked.
"But now we want the implementation of Judge Ryan's recommendations.
"There is no point spending million on a report or having an inquiry if you do not take positive steps to make sure that these atrocities are not repeated."
Elsewhere, eight child protection organisations joined forces to examine the progress of the Ryan Report Implementation Plan, in which the Government pledged to implement 99 specific actions within agreed time frames.
The Saving Childhood Ryan campaign involves Barnardos, CARI, Children's Rights Alliance, Irish Association of Young People in Care, ISPCC, One in Four, Rape Crisis Network of Ireland and Dublin Rape Crisis Centre.