On 14 March, ahead of the first anniversary of shootings at a Christchurch mosque which resulted in the deaths of 51 people, a national remembrance service was cancelled out of concerns over the virus. Jacinda Ardern said the decision was a pragmatic one, adding, "We're very saddened to cancel [it], but in remembering such a terrible tragedy, we shouldn't create the risk of further harm being done." An Auckland festival celebrating Pacific culture was also cancelled. Ardern announced that, effective 01:00 on 16 March, all travellers arriving in or returning to New Zealand from outside of the country must self-isolate for 14 days. This applies to all travellers, even if they are New Zealand citizens, but excludes travel from the Pacific islands unless the traveller is symptomatic. In addition, restrictions were placed on travel to the Pacific islands from New Zealand, barring travel to the region by those showing signs of coronavirus symptoms, as well as close contacts of coronavirus patients. Cruise ships will be prohibited from docking in New Zealand until 30 June. Ardern described these as being among the "widest ranging and toughest border restrictions of any country in the world".