The aforementioned changes are related to the date of the Southland Anniversary Day regional public holiday, and probably follow last month's announcement (2013-01-15) by New Zealand's Southland District Council that it had maintained the move of the Southland Anniversary Day regional public holiday to be observed on Easter Tuesday.
Two years ago (2011-12-07), the three mayors of New Zealand's Southland Province announced that from 2012 onward, the Southland Anniversary Day regional public holiday would henceforth be observed on Easter Tuesday, with one of the mayors commenting that observing the Southland Anniversary Day regional public holiday on Easter Tuesday was the obvious choice as so many organizations are already using Easter Tuesday as Anniversary Day anyway.
Previously, the current Southland Anniversary Day was officially listed as occurring in January.
Links and References
Below are links to the news stories referred to in the above "New Zealand 2019-2021 Public Holidays Amended" news story, as well as links to subsequents news stories which refer to the present news story.