The Corvidan Archipelago uses a system of timekeeping measured with a 24-hour clock and a lunisolar calendar. Times are written in the format MN:HR DD-MM-YYYY.
Since prehistory, Corvidans have used sundials and other horological devices to measure the passage of time. Because the Corvidan Archipelago exists in the Aequor Arcanus' Southern Hemisphere, their sundials rotate in a direction that, in English, would be referred to as counterclockwise. In the Corvidan language, the equivalent directions are referred to as sunwise and countersunwise. In modern times, Corvidans use magitech devices such as SmartStones that display the time in numeral format instead of as an analog clock interface.
Each Corvidan day is measured from 01:01, which is the approximate minute that the sun rises on Day 1 of Month 1, until 60:24, the minute before the sun rises on the following day. Days are broken up into 4 quarter-days: sunrise, sunset, moonrise, and moonset. The transition points between quarter-days are called dawn, mid-day, dusk, and midnight. Because the sun rises and sets at different times throughout the seasons, the actual period of daylight does not usually align with the time periods referred to as sunrise and sunset. Each quarter-day contains 6 hours, which are further divided into 60 minutes. Minutes can be subdivided into an even smaller unit of time called seconds which are rarely used outside of scientific contexts. Businesses typically open from dawn until dusk, but many essential services operate 24 hours a day. Mandatory schooling takes place during sunset, but some education programs are offered during sunrise or moonrise.
The Corvidan year begins on Day 1 of Month 1, which is also the first day of the Corvidan season of summer. The Corvidan season of winter begins on Day 1 of Month 7. Each year consists of 12 months, which are in turn broken up into 6 weeks, each consisting of 5 days. The final day of each week is a holiday for most Corvidans, except for those in essential service positions. These 30-day months are asynchronous with the lunar calendar, so moon phases do not occur on set days of the month. A 360-day year also does not align with the solar year, which is approximately 365.25 days long. After Day 30 of Month 12, the Corvidan calendar adds intercalary days to ensure that Day 1 of Month 1 of the following year is still the first day of summer. Each year has 5 intercalary days, except on years that are a multiple of 4, which have 6 intercalary days. These intercalary days are also a holiday for both workers and students. In Iryna, elections are always held on Day 30 of Month 12, with the victor taking office on Day 1 of Month 1 of the following year; the intercalary days serve as a transition period to coordinate the transfer of power. Year 1 of the Corvidan calendar is the approximate time period that the first refugees landed on the island of Ardenei, which was the first step in the settlement of the Corvidan Archipelago.
The only annual occasion celebrated on every island in the Archipelago is Year's-End, celebrated during the intercalary days at the end of Month 12. During Year's-End, most Corvidans are not expected to work, with specific traditions varying between islands and between families. Other than Year's-End, there are few holidays or festivals that are universally recognized or celebrated by a majority of the population. In Iryna, annual cultural events such as art exhibitions, fashion shows, and sports tournaments fill a similar role. Depending on their industry, Irynian workers may have a set amount of vacation days, which they can spend if they want to attend such an event. Vacation days can also be spent to celebrate anniversaries, which might commemorate relationship milestones with a loved one or important personal achievements. Birthdays are not celebrated and are not considered an important milestone for Corvidans of any age.
The Armada Parade is Iryna's closest equivalent to a national holiday, a city-wide event celebrated on Day 6 of Month 12. The decisive battle of the Champions War was a clash between Oxanian and Irynian warships off the Irynian coast, with the Irynians succeeding in repelling the Oxanian invaders. To celebrate their victory, the warships were brought on land and paraded through the streets. In modern Iryna, the parade is still held every year, although it features decorative floats rather than actual ships. The parade is held along the entirety of Oceanview Avenue, one of the city's most important commercial streets. Oceanview Avenue connects directly to the port and, crucially, is one of the few streets wide enough to accomodate the parade as well as its onlookers.