How the countdowns work
Each countdown works out the next date of the event from the calendar rule (for example, the fourth Thursday in November for US Thanksgiving) and counts to the first second of that day on your device's clock and time zone. The summer countdown is the exception: it counts to the exact minute of the June solstice. Your own countdowns (days until, birthday, wedding, vacation, retirement) count to the date you pick, or to a time if you add one. The blocks under the numbers show the same time as a picture: days when the event is up to a month away, then weeks, then months.