The advice to use specific times to encourage punctuality has been going around for decades, if not longer. I recall reading this advice in the 1970s. I don't

The advice to use specific times to encourage punctuality has been going around for decades, if not longer. I recall reading this advice in the 1970s. I don't know if there's any basis for this practice in fact, but I know of at least one second-order effect: When someone invites me to a meeting at an odd time, I always presume they are making an effort to get everyone to show up on time, and that motivates me to make sure I'm not the straggler!