Today will see the further lifting of Covid-19 restrictions with inter-county travel and in-person religious services among the activities that will resume.
It is the most substantial easing of restrictions so far this year and a range of social and economic activity will resume.
Galleries, museums, libraries and other cultural attractions will reopen and many churches and hair salons will open their doors.
A maximum of three households, or up to six people from individual households, can meet outdoors, including in private gardens.
Adults in pods of up to 15 people will also be permitted to attend training.
Fully vaccinated people can meet other fully vaccinated people indoors and without masks with no more than three households present.
Today will also see the phased reopening of non-essential retail with click and collect and in-store shopping by appointment.
Personal services such as hairdressers, barbers and beauticians can also open after more than five months closed.
In-person religious services can resume. There will be a limit of 50 mourners at a funeral.
While 50 guests can attend a wedding ceremony there is a limit of six people for indoor receptions and 15 outdoors.
Up to 15 people will also be able to attend other organised outdoor gatherings and adults can train together again in pods of to 15.
Meanwhile, 12,000 businesses are expected to reopen their premises this week.
However, the Government has said people should continue to work from home where possible and public health officials have urged business owners, employees and customers to take great care.
