How are the days counted?
It counts calendar days between today's date and the event's date. An event tomorrow is “in 1 day”, today is “Today”, and yesterday is “1 day ago”. Times do not change the day count, which drops by one at midnight. For events with a time, the time left until then is shown separately.
What about time zones?
“Today” is the date in the time zone set on this device. For an event in another time zone, enter its date and time converted to this device's local time. If you change the device's time zone, the day changes over at that zone's midnight.
What happens to a birthday on February 29?
A yearly event on February 29 is counted as February 28 in years that are not leap years.
What happens to my list when I open a share link?
Opening a share link replaces the list on that device with the shared one. Press “Back to my list” in the bar that appears just under the list heading to restore the list you had before. Your previous list is kept on this device, so you can still restore it after reloading or from another tab, until you press “Keep this list”.
How is this different from the Workday Countdown and Date Calculator?
This page lists calendar days until several events and shows them large. To count only working days (excluding weekends and holidays), use the Workday Countdown. To find the days between two dates or the date N days from now, use the Date Calculator. To time minutes or hours, use the Countdown Timer.
My screen still goes dark in full screen
In full screen the page asks the browser to keep the screen on using the Screen Wake Lock API. It may not work in browsers without support or in power-saving mode. In that case, lengthen the screen timeout in your device settings.