How to calculate WEEKNUMBER in Month / Quarter / Year with Excel?

Let’s say you have daily data and your boss wants to see the trends by week in month or week in quarter? How do you calculate the week number in a month or quarter? In this article, let me explain the logic and formulas we can use Excel for this.
How to use Date & Time values in Excel – 10 + 3 tips

Excel date time features are very handy and knowing how to use Excel date values can help you save a ton of time in your day to day spreadsheet chores. Let us prepare for your date with the sheet using these 10 handy tips.
Before jumping on to the tips, it helps to know how excel represents the date and time.
Microsoft Excel stores dates as sequential numbers … January 1, 1900 is serial number 1, and 28 July, 2021 is serial number 44405 because it is 44,405 days after January 1, 1900. Excel stores times as decimal fractions because time is considered a portion of a day.
Read on to learn more.
Top 10 Excel formulas for IT people

Are you in IT & use Excel often? This article explains top 10 formulas for IT professionals. Useful for project managers, IT analysts, Testing people and BAs.
We cover a 10 practical situations and explore various Excel formulas to solve them. Example workbook provides more details too.
Highlight due dates in Excel – Show items due, overdue and completed in different colors

Congratulations to you if your job does not involve dead lines. For the rest of us, deadlines are the sole motivation for working (barring free internet & the coffee machine in 2nd floor, of course). So today, lets talk about a very familiar problem.
How to highlight due dates in Excel?
The item can be an invoice, a to do activity, a project or anything. So how would you do it using Excel?
When is the next Monday? [Homework]

Psst. Hey you, yeah, you there… have time for a quick date? A date with Excel that is.
If so, take up this homework problem and post your answers in comments.
Assuming you have an input date in cell A1,
- What is the formula for finding next Monday?
- What is the formula for finding first Monday of next month?
Post your answers in comments
How much long service bonus to pay? [Homework]
‘Tis Friday and it is too hot in my home office to stand and type a longish post. So, let’s keep this skirtish (short and pretty).
How would you calculate long service bonus?
Let’s say you are HR manager at BigLargeInc. and you are looking at Julia’s service details. You have her employment start date, current date, her leave without pay details, as shown below.

You need to calculate how many days of continuous service Julia had (ie total service – duration on leave without pay). How would you write the formula?
Filter all records for November or 11AM or 2017 [quick tip]
Imagine you are the first officer at ship terminal αε974F1 on remote planet Alderaan. Your job involves looking at terminal log to see anomalies in time space continuum. So one day after getting to work late, thanks to crazy traffic on the floating super way in your settlement, you are looking at latest terminal log for αε974F1 on Excel (of course Excel, what else are you going to use? Notepad?!?) and want to check all the records logged at 7 AM on any day. You don’t have all the time in universe to filter records one at a time. You don’t want to write a formula or something else as it is too early in the morning and the nearest Starbucks is 7 light years away. So what would you do?
Use filters of course.