Not everyone has watches or clocks, or even sun dials. Everyone does have time around them, even if it's been stopped it's always there.

Is time an important concept for your character?

Does your character know how to tell the time?

How does your character calculate or tell what time it is?

Is your character good with time management, or are they commonly too early/late?

The specific time is rarely relevant to my stories. It's usually more relative and connected to things going on (so I might mention that a character notices the sunset in order to signal that it's evening). I used to occasionally mention watches or the time showing on the TV, but I suppose now that I would talk more about checking the phone.

When I wrote my story, time wasn't an important subject because I created my characters based on the story itself. Most of the characters were able to tell the time, but not like what we look at the clock or watch. Time was only a minor considering the story actually told the exact time while the characters have done certain things or events that have happened to them.

Most of my stories are set in the high-tech age so, my characters don't find it hard to tell time. However, I don't have them glancing at their phones, watches, etc, all the time. Since I find mentioning time convenient in creating smooth transitions in the story, I would have one character mention to the other that it's "time" or something like that and then could cut [sorry for using script-writing directions] to a different scene where another group of characters have arrived just in time for meeting, game, date. . .whatever.

Sometimes, I'll have characters look at their watches either to up the ante if they're going to be late for an important appointment or like always only as a strategy to create another smooth transition from one scene to another.

Interesting, you guys! Time is such a common concept and yet it's used widely and differently among stories.

In mine, since I'm obsessed with flashbacks and time-related revelations, my characters are normally more engaged in timelines that meet and part ways as part of the major plot. They generally don't "look at the watch" per se, but I imagine them as conscious to day and night, and have good memory of days that had passed so that they are able to relate experiences to the revelations and twists in the story.

I remembered another way that I often had characters mention or 'notice' the time!

I do it by indicating another environment change. For example, one of them might "notice their stomach grumbling because it's well past lunchtime" or one may need to "turn on a lamp because the last bits of sunlight are fading," etc. It's not necessarily an exact time, but it does call attention to the general time frame that might be relevant.

I never really concentrate on the time but i do include that it would be day or night and most of my stories happen with a time frame, adding school hours, work ending and late night snacks that can be estimated by the readers.