What is Father's Day?
Father's Day falls on the third Sunday in June in the United States, the United Kingdom, Canada, Ireland and many other countries, putting it between the 15th and the 21st. It started in Spokane, Washington in 1910 and took until 1972 to become a permanent American holiday, decades after Mother's Day. Plenty of countries use different dates, including Australia in September and much of Catholic Europe on St Joseph's Day in March. This countdown uses the June rule.
Retail treats it as a smaller occasion than its counterpart in May, with spending concentrated on food, drink and tools rather than flowers, and the pressure on restaurant bookings is lighter, though Sunday lunch in June still fills. Because the date differs by country, families spread across borders often keep two of them, and greetings cards sold in one market are useless in another. The third Sunday in June regularly collides with major sporting fixtures, which in practice shapes how the day is spent more than any tradition does. Schools in the northern hemisphere that make cards for it have to do so before term ends, which in some systems means the work comes home weeks early. For an international gift, note that the June rule covers North America, Britain and Ireland.
Germany attaches its Vatertag to Ascension Day, a Thursday in spring that is also a public holiday, and the custom is a long walk with a handcart of drink rather than a meal at home. Taiwan keeps 8 August, because the numbers sound like the word for father. Finland and Sweden both hold theirs in November. The assumption that goes wrong is that the day is always a Sunday: the German one never is, so a card timed for the June rule reaches a German household anything from two to six weeks after the occasion has been and gone.
The next one falls on Sunday, 20 June 2027, and this page counts down to the midnight that starts it in whatever time zone your browser reports.