Let's say the world decides to follow UTC. In Hawaii, Midnight UTC is 2pm in the afternoon in our current system. So in the early "solar afternoon" it will sw

Let's say the world decides to follow UTC. In Hawaii, Midnight UTC is 2pm in the afternoon in our current system. So in the early "solar afternoon" it will switch from Monday to Tuesday. So if you're working late on Tuesday you'd have to clarify or use some other phrase.