hours ahead of time vs hours in advance

Both "hours ahead of time" and "hours in advance" are correct and commonly used phrases in English. They are interchangeable and can be used to indicate that something is done before a particular time or event.

Last updated: March 26, 2024 • 4047 views

This phrase is correct and commonly used in English.

"hours ahead of time"

This phrase is used to indicate that something is done before a particular time or event.

Examples:

Please submit your report two hours ahead of time.
She always arrives at least three hours ahead of time for appointments.

Show examples from the web [+]

And 12 hours ahead of time.
Ladies and gentlemen, Mr President-in-Office of the Council, something very unusual has happened; not only have we taken all the questions, we have also completed Question Time half an hour ahead of time, something that we very, very, rarely do.
We got 18 hours of flight time ahead of us, so turn to the person next to you and get to know them.
Should the information be available more than 48 hours ahead of the published departure time, it should be transmitted as quickly as possible to the subcontractor, regardless of the 36-hour time-limit laid down in the regulation.
11 hours ahead is Russian time.
Maybe an hour ahead of us.
He's only an hour ahead of us.
Two hours ahead of schedule, Karen.
I'm always an hour ahead of anyone else, really.
Your orders were to stay a half hour ahead of us.
Everyone I had to speak to is eight hours ahead of us.
We've got 16 hours ahead of us.
It'll put our kids a few hours ahead of whatever else is coming, and I think that that's a good thing.
They're on the 10 East an hour ahead of you.
Still got three hours ahead of us till we reach Roarton.
Rosa Diaz, you are six hours ahead of schedule.
They're still a few hours ahead of us at the least.
We've got a lot of long hours ahead of us.
That rock also indicated they're about an hour ahead of us.
What, an hour ahead of schedule?

Alternatives:

hours in advance
hours before the deadline
hours prior to the event
hours before the scheduled time
hours earlier

This phrase is correct and commonly used in English.

"hours in advance"

This phrase is used to indicate that something is done before a particular time or event.

Examples:

Please book your tickets at least two hours in advance.
The meeting was scheduled three hours in advance.

Show examples from the web [+]

I made a written record request 72 hours in advance.
The need for assistance must be notified 24 hours in advance.
You have to register online at least 12 hours in advance...
He sends you the coordinates of some landing spot 24 hours in advance.
Any kind of change in your schedule, you got to let me know 72 hours in advance.
The intention to move inadmissibility shall be notified at least 24 hours in advance to the President who shall inform Parliament immediately.
If you'd been in charge, we'd have known about it 24 hours in advance.
The Rules of Procedure clearly state, in Rule 115, that texts must be made available 24 hours in advance.
The competent authorities have recently been allowed a derogation from the provision that the information must be delivered to the slaughterhouse at least 24 hours in advance.
I proposed to the Committee on Employment and Social Affairs that a driver should receive prior notice of commencement of a period of availability 24 hours in advance.
Community vessels shall notify the Department at least 24 hours in advance of their intention to enter or leave the Guinea-Bissau fishing zones.
The intention to move inadmissibility shall be notified at least 24 hours in advance to the President who shall inform Parliament immediately.
The availability of food chain information 24 hours in advance of slaughter should be a prerequisite for a risk-based meat inspection without incision procedures.
The intention to move inadmissibility shall be notified at least 24 hours in advance to the President who shall inform Parliament immediately.
The producer organizations or associations thereof shall notify each withdrawal operation at least 24 hours in advance to the competent national authorities, listing the products intended for intervention together with the estimated quantity of each product concerned.
These reports shall be transmitted no earlier than eight hours and no later than sic hours in advance of each departure from the Regulatory Area.
The intention to move referral back to committee shall be notified at least 24 hours in advance to the President, who shall inform Parliament immediately.
Turning to the matter in hand, there is in the Rules of Procedure a provision according to which motions of this kind on non-admissibility have to be received 24 hours in advance.
All transhipments taking place in Mauritian ports shall be notified to the authorities of Mauritius 48 hours in advance.
Such reports shall be transmitted no earlier than 8 hours and no later than 2 hours in advance of each departure from the Regulatory Area.

Alternatives:

hours ahead of time
hours before the deadline
hours prior to the event
hours before the scheduled time
hours earlier

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hours ahead of time vs hours in advance