One of these days vs On one of these days

Both "one of these days" and "on one of these days" are correct, but they are used in different contexts. "One of these days" is a common expression meaning at some unspecified time in the future, while "on one of these days" is used when referring to a specific day among a group of days. They are not directly comparable as they serve different purposes.

Last updated: March 30, 2024 • 1181 views

One of these days

This phrase is correct and commonly used in English.

This phrase is used to refer to an unspecified time in the future, indicating that something will happen or be done at some point.

Examples:

One of these days, I'll learn how to play the guitar.
I'll get around to cleaning out the garage one of these days.
One of these days, we'll take that trip we've been talking about.

Show examples from the web [+]

One of these days I'll have to finish up that kiln.
One of these days soon, I'm changing all that.
One of these days you'll have to stand on your own two feet.
One of these days I'll leave home.
One of these days Grace won't even be able to relate to me.
One of these days you'll have to come in and whip me up an omelette.
One of these days the master will let rip.
One of these days I'll find her better.
One of these days, I might surprise you.
One of these days I'll learn to embrace pop culture.
One of these days, I just might.
One of these days, she may...
One of these days the fox trot may come back.
One of these days, honey...
One of these days you will need me too.
One of these days, it will kill him.
One of these days I'm going to walk in on something normal.
One of these days you'll appreciate the effort girls make.
One of these days, I'll describe you to yourself.
One of these days it might snow for real.

On one of these days

This phrase is correct but less commonly used in English.

This phrase is used when referring to a specific day among a group of days. It implies a selection or choice of a particular day from a set of options.

Examples:

On one of these days, we should go hiking.
I'll make a decision on one of these days.
On one of these days, I'll try that new restaurant.

Show examples from the web [+]

I suppose I could take him up on it one of these days.
They're going to turn on you one of these days.
Drop in on me in Paris one of these days.
In the meantime, are you guys planning on kids one of these days?
You should go with your sister on a spree one of these days, you know?
THE DRAFT IS GOING TO COME CALLING ON ME ONE OF THESE DAYS,
I'd imagine myself on one of those trains one day.
And the one day, some girl - she was over on one of those summer English courses they run.
If one of these days falls on a Saturday or Sunday, the Director may designate another day in lieu.
They'll kill one another one of these days.
Maybe send one your way one of these days.
One of these days Cathy'll throw you out...
One of these days I'll have to finish up that kiln.
Lucky thinks that one of these days...
One of these days Jack will come crawling to me.
We'll freeze 'em one of these days.
You know, we have to get divorced one of these days.
'cause one of these days, you're mine.
But one of these days, she's coming after you.
Just buy me dinner one of these days.

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One of these days vs On one of these days

One of these days

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