Just a little PWA that displays, at a glance, the local time around the world for each of your input contacts. With a global family, this could be a useful check before disturbing someone's sleep or work or worse...
Of course, you can turn this into an 'app' yourself with PAWA or just pin it 'as is' on your Start screen. Or just add it as a 'Favourite'. It's up to you. If you're confused by the different PWA options then check out my feature here.
Here's the PWA in action:
An overview of my contacts and their local time - Diane will be in bed, and David at lunch, so probably not a good time to call either of them; diving down to call or message them; and editing details as part of the set-up process.