The week (wk) is a time unit equal to 7 days or 168 hours, serving as the standard organizing period for business cycles, school schedules, and pay periods in most cultures. Project timelines, fitness plans, and recurring events are typically planned on a weekly basis. One week equals exactly 7 days or 604,800 seconds.

The year (yr) is a time unit equal to approximately 365.25 days or 31,557,600 seconds, representing one full orbit of the Earth around the Sun. It is the primary unit for age, financial reporting, interest rates, and long-term contracts, with the quarter-day surplus handled by leap years. One year equals roughly 52.18 weeks or about 8,766 hours.