A growing number of hotels seem to be changing their definition of a day. 

Most travelers presume that when they check into a hotel, they can be there for 24 hours. Not necessarily so. 

Some hotels now define a day’s stay as 18 hours. And that 18 hours may not be measured by when you check in, but by when a hotel’s check-in time is available, possibly making your stay even less. 

So, always check with the hotel to make sure you don’t get charged for checking in early or checking out late. It’s time to sync up your watches!