Propose a few slots and share one link. Everyone answers Available, Maybe, or Busy, and the best time rises to the top on its own.
Anyone with the link can respond from any device. Only the organizer signs up, so nobody's answer gets stuck behind a login wall.
Three answers instead of a hard yes/no. "Maybe" keeps unsure people in the conversation instead of silent, and it counts toward the tally.
As responses come in, the slot that works for the most people is tagged and highlighted. No spreadsheet, no counting by hand.
Pick the winner and you're done: calendar invites go to everyone, and a Zoom, Google Meet, Microsoft Teams, or Webex link goes out with them.
Every participant sees the proposed slots in their own timezone. Nobody converts anything.
Connect Google Calendar or Microsoft 365 so you only propose slots you can actually make.
Set a response deadline so the poll closes itself and plans don't drift for weeks.