A national remembrance service marking one year since the Christchurch mosque attacks will take place in North Hagley Park on Sunday 15 March.
The Christchurch City Council said it would jointly lead the service with the local Muslim community, the government and Ngāi Tūāhuriri as mana whenua.
The service, 'Ko tātou, tātou - We are one', will start at 3pm and be live streamed for people to watch worldwide.
Council said it was to remember and honour the 51 people who died in the attacks, and build on the spirit of unity that came out of the tragedy.
It said people attending should allow plenty of time to get there, with some road closures around Hagley Park.
They should avoid bringing bags to the event and make sure any tributes they're bringing are entirely compostable - for instance, flowers left unwrapped.
If severe weather iss expected, the service will be moved to Horncastle Arena.
Council said the programme for the service was put together with input from the people most affected by the attacks, and included music from students at Burnside and Cashmere High Schools, which lost current and past students in the attacks.
Full details of the service will be released next week.