You know how it goes. Someone says “4pm my time”, and now you’re counting on your fingers, opening a converter in another tab, and getting it wrong by an hour anyway because one of you moved the clocks last weekend.
ZoneGlider puts your cities where they actually are on the planet, and lets you drag the daylight across them. Move it forward and 4pm Wednesday in Brisbane becomes 11pm Tuesday in Los Angeles, so you read the answer off the screen instead of working it out.
Dragging time around
Seeing what time it is in another city is just a drag of your thumb. Push it gently and it creeps along; throw it and it covers days.
Who’s awake, without guessing
Every city gets the same 24-hour track, so the rows line up. In Availability the colour tells you who’s awake and who’s asleep, and you set your hours and theirs.
Then send whatever moment you’re looking at straight to Calendar or Reminders.