Year (yr)
Definition: Year na the time wey Earth take complete one orbit around the Sun. Converters often use average civil year of 365.25 days.
History/origin: Years don matter for farming, astronomy, religion, and civil administration since the first calendars.
Current use: Years dey used for age, contracts, loan terms, long-term investments, climate records, and historical dating.
Week (wk)
Definition: Week na seven-day calendar interval wey people dey use to group work, school, religious, and planning cycles.
History/origin: Seven-day cycles spread through ancient religious, astronomical, and civic traditions before e enter modern international calendars.
Current use: wk dey common for work schedules, class plans, sprint planning, pregnancy tracking, subscriptions, recurring chores, rent cycles, and short-term goals.