Organised by well known artist Paula Lambert – those in attendance will hold a minutes silence as a mark of respect.
It's as Dun Laoghaire Rathdown County Council says progress is being made on reaching an agreement for a temporary halting site to house the 15 survivors.
It's expected funerals will take place next week for those who died.
Paula Lambert says it's important that as a society we reflect on the tragedy.
