By this stage the kettle has usually been on once already and the radio is halfway through the morning news, which is precisely when nobody is watching the clock. A live count to 10:11 am does that watching for you, updating continuously so the number in front of you is always the current one.
Coming back to this page in an hour, tomorrow or next month shows exactly the same thing: however long is genuinely left until 10:11 am next comes round. There is no session to lose and nothing to configure again, because the number is worked out fresh each time from the clock on your device.
Writing a time as 10:11 am keeps the am or pm attached, which reads naturally in a sentence but is easy to skim past in a long list of similar entries. Writing it as 10:11 is less conversational and considerably harder to misread, which is why schedules and rotas lean that way.
Common questions
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 10:11 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.
What is 10:11 in the 12-hour clock?
That is 10:11 am, or eleven minutes past ten in the morning if you are saying it aloud. From 13:00 onwards, subtracting twelve gives the pm figure — the same moment written three different ways.