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word usage - "At this time" vs "At that time" - English Language ...
At this time the button on the clock should be pressed. Here the present simple is used to express a rule (as it is used to express habits and routines) - actual time is only grammatically in present, the rule applies to future and past. If we put it into past tense The "move" was finished when the player released the piece.

"on time" vs. "on-time" - English Language & Usage Stack Exchange
On-time delivery is our goal. On-time flight departures were up 10%. On-time performance is an important ingredient However, if you're using the phrase on time as an adverb to describe when the verb is going to happen, the hyphen is not appropriate. For example: We will deliver your package on time. Your flight will depart on time.

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idioms - You have the watches, but we have the time - English Language ...
Therefore, since people with watches have the time, it's funny to say, "You have the watches, but we have the time." That funniness, that oddity, is how we get cued to this being a double-entendre, clued into the notion that the superficial meaning we would surmise at first blush isn't the deeper meaning that's actually intended.

What time or which time? - English Language & Usage Stack Exchange
You might use "which" in association with time if you narrow down the options: Which works best for you: 9am or 2pm? Which do you prefer: morning or evening? What time tomorrow works best for you? (very open-ended) Going the opposite direction, "what is your favorite hot beverage" would be a different way to frame your first question.

word choice - “Time” versus “Times”: When is time plural? - English ...
Without an article, time is a mass noun referring to the experience of duration: Time and space are dimensions; In time, you'll come to realize. With an article, time is a count noun referring to an individual event. The time we tore the goalpost down,What is the time now? At the same time; A time to remember.

meaning - How should "midnight on..." be interpreted? - English ...
From what I understand, the word "midnight" is usually interpreted incorrectly. Midnight is written as "12am" which would imply that it's in the morning. Therefore, it should be at the start of t...

"Lunch" vs. "dinner" vs. "supper" — times and meanings?
I've seen cases where a noon-time meal is referred to as dinner, and the evening meal is called supper. There's also lunch around noon followed by dinner in the evening. Is there a particular diffe...

prepositions - On vs At with date and time - English Language & Usage ...
This does make sense, as this defines precision of date-time value - speaking about year, month, day, or exact time.

Single word for the "estimated time of completion"
I use ETA (estimated time of arrival) for all "estimated times", whether they're arrivals, completions, pizzas, etc. My guess is the existence of that word is strong evidence that no single-word replacement exists that most people would recognize.