Dates


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Get date ranges from a schedule

The above picture shows you two formulas that extract names (column B) and date ranges (column C and D) based […]

How to count overlapping time

The worksheet above shows four different time ranges in column B and C, the formula in cell C10 counts the […]

Count overlapping days across multiple date ranges

NC asks: Thanks a tonne, Oscar. It took me about 8 hours to work through this formula piece by piece, […]

Find date given day and week

La Thăng asks: I want to find day if given date and week, for example : if given Tuesday, 32th […]

Count overlapping days in multiple date ranges, part 2

In the previous post I explained how to count overlapping dates between a single date range and multiple date ranges. In […]

Count overlapping days in multiple date ranges

The MEDIAN function lets you count overlapping dates between two date ranges. If you have more than two date ranges […]

Find missing dates in a set of date ranges

The formula in cell B8, shown above, extracts dates not included in the date ranges, in other words, dates that […]

Working with overlapping date ranges

Today's blog post is about date ranges, the techniques demonstrated here can also be applied to time or other numerical […]

Use MEDIAN function to calculate overlapping ranges

I found an old post that I think is interesting to write about today. Think of two overlapping ranges, it may be dates, […]

Identify rows of overlapping records

cwrbelis asks: Hi Oscar, Great website! Keep up the good work. I have a question as to how to expand […]

Calculate min and max date among overlapping date ranges and based on a condition

Liz asks: I want to identify the overlap based on a criteria but now I want to know what is […]

Highlight date ranges overlapping selected record [VBA]

The following example shows you how to highlight overlapping ranges. How it works Select a date in the table. Conditional […]

Find consecutive dates in a cell range

Column B contains random dates. The array formula in column D returns consecutive dates from column B. Array formula in […]

Days contained in a range that overlap another range

Rene asks: Hi Oscar, I need a fomula that gives me the number of days contained in a range that […]

Highlight events overlapping federal holidays

Bryan asks: i am trying to do a conditional formatting for a calendar row. (essentially, a gant chart) i have […]

Prevent users from entering overlapping date and time ranges

The picture below shows a table with data validation applied. If a user tries to enter an overlapping date range, […]

Find date range

Elizabeth asks: I need to figure out the date range of a cell. So if cell "E2" has a date […]

Inventory consumption

Haroun asks: The problem is with regards to analysing the remaining life of my inventory based on the quantity available […]

Search a table and use the returning value to search another table

Nena asks: Hi Oscar,I've been trying to find the solution for my lookup problem for a while now and you […]

Create date ranges: Weeks within a month

Anees asks: Hi, The above formula in A9 "Increasing date in a column" works pretty good however I have a […]

Count a specific weekday in a date range

NETWORKDAYS function returns the number of whole workdays between two dates. The array formula in this blog post counts for […]

Schedule project dates based on a finish date

Danielle asks: I have a schedule that I am working with and based on one date (ie. 6/4/12) different processes […]

Extract week ranges based on a given date range

The formula in cell B7 and C7 extracts whole weeks within the given date range in cell B3 and C3. […]

Count weekday within date range except holidays

Steve asks: Right now I'm using the following formula to tell me how many of a specific defined day, ie […]

Count entries based on date and time

Question: My issue is that I get the date in this format: 7/23/2011 7:00:00 AM I am trying to count […]

Filter overlapping date ranges

This blog article describes how to extract coinciding date ranges using array formulas, the image above shows random date ranges […]

Highlight records based on overlapping date ranges and a condition

adam asks: Hi, I have a situation where I want to count if this value is duplicate and if it […]

Count groups in calendar

Question: Sam asks: Is there a formula that can count blocks For eg in your picture (see picture above) if […]

Extract dates from overlapping date ranges

The array formula in cell B3 extracts overlapping dates based on the date ranges in column D and E. Array […]

Convert date ranges into dates

The array formula in cell B3 creates a list of dates based on the date ranges displayed in D3:E7, it […]

Convert dates into date ranges

The array formula in cell D4 extracts the start dates for date ranges in cell range B3:B30, the array formula […]

List dates outside specified date ranges

The Excel defined table contains start and end dates for each date range in cell range A3:B10. Cell B13 is […]

Identify overlapping date ranges

The formula in cell F6 returns TRUE if the date range on the same row overlaps another date range in […]

List all unique events in a month

Question: I have a table with four columns, Date, Name, Level, and outcome. The range is from row 3 to […]

Highlight duplicates with same date, week or month

The image above demonstrates a conditional formatting formula that highlights duplicate items based on date. The first instance is not highlighted, […]

Filter duplicates within same date, week or month

The image above demonstrates a formula in cell E3 that extracts duplicate items if they are on the same date. […]

Extract unique distinct year and months from dates

Question: How to create unique distinct year and months from a long date listing (column A)? You can find the […]

Formula for matching a date within a date range

Table of contents Match a date when a date range is entered in a single cell Match a date when […]

Find latest date based on a condition

Table of contents Lookup a value and find max date How to enter an array formula Explaining array formula Download […]

Most frequent value between two dates

In this article I will show you how to extract the most frequent value (text or number) between two dates […]

Lookup min max values within a date range

This article explains how to find the smallest and largest value using two conditions. In this case they are date […]

Create a list of dates with blanks between quarters

Question: How do I create a list of dates with blanks between each quarter? (Q1, Q2, Q3 and Q4) Answer: […]

Filter duplicate values and sort by corresponding date

Array formula in D2: =INDEX($A$2:$A$21, MATCH(SMALL(IF(COUNTIF($B$2:$B$21, $B$2:$B$21)>1, COUNTIF($A$2:$A$21, "<"&$A$2:$A$21), ""),ROWS($A$1:A1)), COUNTIF($A$2:$A$21, "<"&$A$2:$A$21), 0)) Array formula in E2: =INDEX($B$2:$B$21, MATCH(SMALL(IF(COUNTIF($B$2:$B$21, $B$2:$B$21)>1, […]

Create a date range [Formula]

Question: I am trying to create an excel spreadsheet that has a date range. Example: Cell A1 1/4/2009-1/10/2009 Cell B1 […]

Lookup the nearest date

The image above demonstrates an array formula in cell E4 that searches for the closest date in column A to the […]

Extract unique distinct values based on a date range

Question: I have a large list of dates and other adjacent values. I want to create a distinct list from […]

Calculate machine utilization

Question: I need to calculate how many hours a machine is utilized in a company with a night and day […]

How to calculate a date based on specific weekday in a month

Question: How to calculate the date of the third Monday of a given month? Answer: Column B contains dates of […]