The following are public holiday

Holiday

A Holiday is a day designated as having special significance for which individuals, a government, or a religious group have deemed that observance is warranted. It is generally an official or unofficial observance of religious, national, or cultural significance, often accompanied by celebrations...

s in the Cook Islands

Cook Islands

The Cook Islands is a self-governing parliamentary democracy in the South Pacific Ocean in free association with New Zealand...

 as prescribed by the Public Holidays Act in 1999. Each Sunday

Sunday

Sunday is the day of the week between Saturday and Monday. For most Christians, Sunday is observed as a day for worship of God and rest, due to the belief that it is Lord's Day, the day of Christ's resurrection....

 is also a public holiday, as most Cook Islanders are religious Christians

Christianity

Christianity is a monotheistic religion based on the life and teachings of Jesus as presented in canonical gospels and other New Testament writings...

, with over half of the population registered as members of the Cook Islands Christian Church

Cook Islands Christian Church

The Cook Islands Christian Church is the largest religious denomination in the Cook Islands. The CICC is a Christian Congregationalist church and has approximately 18,000 members, including 56% of the residents of the Cook Islands...

.

Date	Name	Remarks
1 January	New Year's Day New Year's Day New Year's Day is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar used in ancient Rome...
2 January	Day after New Year's Day
25 April	Anzac Day ANZAC Day Anzac Day is a national day of remembrance in Australia and New Zealand, commemorated by both countries on 25 April every year to honour the members of the Australian and New Zealand Army Corps who fought at Gallipoli in the Ottoman Empire during World War I. It now more broadly commemorates all...
moveable Moveable feast In Christianity, a moveable feast or movable feast is a holy day – a feast day or a fast day – whose date is not fixed to a particular day of the calendar year but moves in response to the date of Easter, the date of which varies according to a complex formula... in spring Spring (season) Spring is one of the four temperate seasons, the transition period between winter and summer. Spring and "springtime" refer to the season, and broadly to ideas of rebirth, renewal and regrowth. The specific definition of the exact timing of "spring" varies according to local climate, cultures and...	Good Friday Good Friday Good Friday , is a religious holiday observed primarily by Christians commemorating the crucifixion of Jesus Christ and his death at Calvary. The holiday is observed during Holy Week as part of the Paschal Triduum on the Friday preceding Easter Sunday, and may coincide with the Jewish observance of...
moveable Moveable feast In Christianity, a moveable feast or movable feast is a holy day – a feast day or a fast day – whose date is not fixed to a particular day of the calendar year but moves in response to the date of Easter, the date of which varies according to a complex formula... in spring Spring (season) Spring is one of the four temperate seasons, the transition period between winter and summer. Spring and "springtime" refer to the season, and broadly to ideas of rebirth, renewal and regrowth. The specific definition of the exact timing of "spring" varies according to local climate, cultures and...	Easter Easter Easter is the central feast in the Christian liturgical year. According to the Canonical gospels, Jesus rose from the dead on the third day after his crucifixion. His resurrection is celebrated on Easter Day or Easter Sunday...
moveable Moveable feast In Christianity, a moveable feast or movable feast is a holy day – a feast day or a fast day – whose date is not fixed to a particular day of the calendar year but moves in response to the date of Easter, the date of which varies according to a complex formula... in spring Spring (season) Spring is one of the four temperate seasons, the transition period between winter and summer. Spring and "springtime" refer to the season, and broadly to ideas of rebirth, renewal and regrowth. The specific definition of the exact timing of "spring" varies according to local climate, cultures and...	Easter Monday Easter Monday Easter Monday is the day after Easter Sunday and is celebrated as a holiday in some largely Christian cultures, especially Roman Catholic and Eastern Orthodox cultures...
First Monday in June	Queen's Birthday Queen's Official Birthday The Queen's Official Birthday is the selected day on which the birthday of the monarch of Commonwealth realms is officially celebrated in Commonwealth countries and in Fiji, which is now a republic. It is an invention of the early 20th century...	Celebrated on the same day as New Zealand celebrates the holiday.
4 August	Constitution Day Constitution Day Constitution Day is a holiday to honor the constitution of a country. Constitution Day is often celebrated on the anniversary of the signing, promulgation or adoption of the constitution, or in some cases, to commemorate the change to constitutional monarchy:...
26 October	Cook Islands Gospel Day	Christianity was first brought to the islands in the 1820s by John Williams John Williams (missionary) John Williams was an English missionary, active in the South Pacific. Born near London, England, he was trained as a foundry worker and mechanic...  of the London Missionary Society London Missionary Society The London Missionary Society was a non-denominational missionary society formed in England in 1795 by evangelical Anglicans and Nonconformists, largely Congregationalist in outlook, with missions in the islands of the South Pacific and Africa... .
25 December	Christmas Day Christmas Christmas or Christmas Day is an annual holiday generally celebrated on December 25 by billions of people around the world. It is a Christian feast that commemorates the birth of Jesus Christ, liturgically closing the Advent season and initiating the season of Christmastide, which lasts twelve days...
26 December	Boxing Day Boxing Day Boxing Day is a bank or public holiday that occurs on 26 December, or the first or second weekday after Christmas Day, depending on national or regional laws. It is observed in Australia, Canada, New Zealand, the United Kingdom and some other Commonwealth nations. In Ireland, it is recognized as...

Also, the regions observe the following regional holidays. Most of the populated islands celebrate their own Gospel Days:

Date	Atoll/Island	Name
13 March	Penrhyn Island Penrhyn Island Penrhyn is the most remote and largest atoll of the 15 Cook Islands in the south Pacific Ocean.-Geography:...	Penrhyn Gospel Day
25 May	Palmerston Island Palmerston Island Palmerston Island is a coral atoll in the Cook Islands in the Pacific Ocean about 500 km northwest of Rarotonga. It was discovered by James Cook on 16 June 1774.-Overview:...	Palmerston Gospel Day
15 June	Mangaia Mangaia Mangaia is the most southerly of the Cook Islands and the second largest, after Rarotonga.-Geography:...	Mangaia Gospel Day
20 July	Atiu Atiu Atiu, also known as Enuamanu , is an island lying at 187 km to the northeast of Rarotonga, in the Southern Islands group of the Cook Islands Archipelago.-Geography:...	Atiu Gospel Day
21 July	Mitiaro Mitiaro Mitiaro, the fourth island in the Cook Islands group, is of volcanic origin. Standing in water 14,750 feet deep it is four miles across at its widest point.-Geography:...	Mitiaro Gospel Day
25 July	Rarotonga Rarotonga Rarotonga is the most populous island of the Cook Islands, with a population of 14,153 , out of the country's total population of 19,569.The Cook Islands' Parliament buildings and international airport are on Rarotonga...	Rarotonga Gospel Day
8 August	Manihiki Manihiki Manihiki is an island in the Cook Islands known as the Island of Pearls. It is a triangular atoll north of Rarotonga.- History :Polynesians are believed to have lived on Manihiki since at least 900 or 1000 AD. Kupe was the first to explore Aotea Roa. Kupe came from Manihiki, also known as...	Manihiki Gospel Day
15 August	Rakahanga Rakahanga Rakahanga, part of the Cook Islands in the central-southern Pacific Ocean, is one of the most unspoiled places on earth. The atoll is 1,248 kilometres from the Cook Islands capital, Rarotonga and lies 1,111 kilometres from the equator...	Rakahanga Gospel Day
27 October	Aitutaki Aitutaki Aitutaki, also traditionally known as Araura, Ararau and Utataki, is one of the Cook Islands, north of Rarotonga. It has a population of approximately 2,000. Aitutaki is the second most visited island of the Cook Islands. The capital is Arutanga on the west side.-Geography:Aitutaki is an "almost...	Aitutaki Gospel Day
8 December	Pukapuka Pukapuka Pukapuka is a coral atoll in the Cook Islands in the Pacific Ocean, with three small islets threaded on a reef that encloses a beautifully clear lagoon. It is the most remote island of the Cook Islands, situated about 1140 kilometres northwest of Rarotonga. It is a triangular atoll with three...	Pukapuka Gospel Day