The first proper meeting of the day has a way of arriving faster than the morning's admin allows for. Knowing exactly how much time is left before 10:17 am makes the difference between finishing one more thing and starting something you cannot finish. The countdown here updates on its own, second by second.
There is one number to read and nothing to choose: hours, minutes and seconds counting down together towards 10:17 am. No start button, no options, no settings page to get right beforehand — just the current gap to that time, updating on its own for as long as you need it.
British speech has a well-worn habit of dropping the middle out of a time: half seven means half an hour after seven, never half an hour before it. Quarter past and quarter to work the same way. Written down, the same moment appears plainly as 10:17 am, or as 10:17 where no ambiguity is allowed.
Common questions
What happens if 10:17 am has already gone for today?
The count simply carries on towards the next occurrence, which is tomorrow. That rollover happens on its own — the page does not need reloading and there is nothing to reset by hand.
Which clock does it use?
Your own. It reads the local time and time zone from the device you are looking at, so the figure reflects where you actually are rather than a fixed zone written into the page.
Will this alert me when the time arrives?
No. It is a live number rather than an alarm — nothing rings, buzzes or notifies you at zero. If you need to be interrupted at 10:17 am, set an alarm as well and treat this page as the running total.
Is it affected by the clocks changing?
Only in the sense that your device is. When the change between GMT and BST happens at the end of March and October, the device adjusts and the countdown follows it without anything to do here.