I've had multiple dreams where my watch told the correct time (which I know because I would use my lucidity to wake me up directly after looking at my watch, and it would read the same time as my bedroom clock, within just a couple minutes of accuracy) but it's just been hit-or-miss, depending on how deep of sleep I'm in. There's probably not a good way to intentionally dream in accurate time if it doesn't come by you naturally, except the aforementioned WILDing.