Date Calculator

To calculate the number of days between two dates, subtract the earlier date from the later date. In practice, count the total number of calendar days from the start date up to and including, or excluding, the end date depending on your purpose. Account for leap years: years divisible by 4 have 366 days, with February having 29 days instead of 28. For example, from 1 January to 1 July in a non-leap year is 181 days. The result in days can be converted: divide by 7 for weeks; divide by approximately 30.44 for average months; or divide by 365.25 for approximate years. Online date calculators handle these complexities automatically. Date calculation is useful for counting days until an event, calculating loan terms, or determining age. Source: Standard date arithmetic; Gregorian calendar.

New Zealand has 12 national public holidays per year: New Year's Day and the day after (1 and 2 January), Waitangi Day (6 February), Good Friday, Easter Monday, ANZAC Day (25 April), King's Birthday (first Monday of June), Matariki (a Friday in late June or July), Labour Day (fourth Monday of October), Christmas Day (25 December), and Boxing Day (26 December). When calculating working days between two dates, you must exclude Saturdays, Sundays, and all statutory public holidays. Additionally, each region has one anniversary day public holiday. When a public holiday falls on a weekend, it is typically observed on the nearest weekday (Mondayised). For accurate working-day calculations involving deadlines, legal timeframes, or payroll, always check the current NZ public holiday calendar. Source: Employment NZ employment.govt.nz/leave-and-holidays/public-holidays.

A leap year is a year with 366 days instead of the usual 365, with an extra day added to February (making it 29 days) to keep the calendar aligned with the Earth's orbit around the Sun. The rule for determining a leap year is: a year is a leap year if it is divisible by 4 — except that century years (1800, 1900, 2000, 2100) must also be divisible by 400. So 2024 is a leap year (divisible by 4); 2100 will not be a leap year (a century year not divisible by 400); and 2000 was a leap year (divisible by both 4 and 400). The next New Zealand leap year after 2024 is 2028. Leap years matter in date calculations because February 29 exists only in those years, affecting age calculations, contract durations, and annual event scheduling. Source: Gregorian calendar standard.

You can use a date calculator to count the exact number of days from today to the next New Zealand public holiday. The fixed-date national public holidays are: Waitangi Day on 6 February; ANZAC Day on 25 April; Christmas Day on 25 December; and Boxing Day on 26 December. Moveable public holidays include Good Friday, Easter Monday, King's Birthday (first Monday of June), Matariki (a Friday in late June or July determined by the Māori lunar calendar), and Labour Day (fourth Monday of October). New Year's Day falls on 1 January and the day after New Year on 2 January. Regional anniversary days vary by location. When a public holiday falls on a Saturday or Sunday, the observance is typically shifted to the following Monday. Source: Employment NZ employment.govt.nz/leave-and-holidays/public-holidays.