in the first week of vs on the first week of

Both "in the first week of" and "on the first week of" are grammatically correct and can be used interchangeably depending on the context.

Explained by Michele A.
Editor at TextRanch

Last updated: September 24, 2024 • 16655 views

in the first week of

This phrase is correct and commonly used in English.

This phrase is used to indicate a specific time frame within the first week of a period. It is commonly used in sentences like "In the first week of January, we will start our new project."

Examples:

In the first week of school, students are usually getting to know each other.
In the first week of the month, I always pay my bills.
In the first week of training, athletes focus on building endurance.
In the first week of December, the city is beautifully decorated for Christmas.
In the first week of the program, participants will learn the basics.

Show examples from the web [+]
Last updated: November 09, 2024

Dec 21, 2016 ... If you speak of a period (like a week): In the first week of next month ... If you speak of a specific day: On the first (day) of next month ...
Nov 5, 2021 ... 23 likes, 9 comments - jadewarshaw on November 5, 2021: "We are still in the first week of November and its not too late to make your budget ...
2 days ago ... Tired of med school in the first week of college only ‍♀️. Vent / rant. I've recently joined a gmc and it seems so tiring. Professors here ...
Aug 28, 2017 ... You might be in the first week of school if: You and your bladder are in negotiations as you try to navigate your new classroom schedule. You go ...
Jan 15, 2022 ... Do you have to go to a lab in the first week of the semester if you haven't even had the class yet? title. i don't think i do, but i'm paranoid.
Heading to Gatlinburg area in the first week of November. What day of the week is the “best” to visit Dollywood? Or any day during the week is great?
May 9, 2022 ... AB exposure in the first week of life alters faecal microbiota development with deviations in the relative abundance of individual taxa ...
Sep 26, 2021 ... We are in the first week of implementation of procore and I'm just reaching out for some tips from everyone on getting your teams to take on ...
Jul 1, 2010 ... Here's a simple function which will tell you whether today is in the first week of the month: from datetime import date def first_week(): ...
Jun 9, 2014 ... Antibiotics in the first week of life increased the risk of allergic rhinitis at school age, while living on a farm at preschool age reduced the risk.

Alternatives:

during the first week of
at the beginning of
at the start of
within the first week of
at the onset of

on the first week of

This phrase is correct and commonly used in English.

This phrase is also used to indicate a specific time frame within the first week of a period. It can be used interchangeably with "in the first week of" depending on personal preference and context.