Skip to content
Free Excel Tutorials
  • Home
  • Excel For Beginners
  • Excel Intermediate
  • Advanced Excel For Experts

Data Analysis

  • How To Filter Data in Excel
  • How to Create Column Chart in Excel
  • How To Perform and Interpret Regression Analysis in Excel
  • What-If Analysis: Scenarios and Goal Seek in Excel
  • Conditional Formatting Data bars Examples in Excel

References

  • Count rows with at least n matching values
  • INDEX function: Description, Usage, Syntax, Examples and Explanation
  • Two-way lookup with VLOOKUP in Excel
  • Two-column Lookup in Excel
  • How to get last row in mixed data with blanks in Excel

Data Validations

  • Excel Data validation don’t exceed total
  • How To Create Drop-down List in Excel
  • Excel Data validation no punctuation
  • Excel Data validation must not contain
  • Excel Data validation date in next 30 days

Get date from day number in Excel

by

This tutorial show how to get date from day number in Excel using the example below.

To get a real date from day number, or “nth day of year” you can use the DATE function.

Formula

=DATE(year,1,daynum)

Explanation of how this formula works

In the example shown, the formula in C5 is:

=DATE(2015,1,B5)

The DATE function build dates from separate year, month, and day values. One of it’s tricks is the ability to roll forward to correct dates when given days and months that are “out of range”.

For example, DATE returns April 9, 2016 with the following arguments:

=DATE(2016,1,100)

There is no 100th day in January, so DATE simple moves forward 100 days from January 1 and figures returns the correct date.

The formula on this page takes advantage of this behavior. The year assumed to be 2015 in this case, so 2015 is hard-coded for year, and 1 is used for month. The day value comes from column B, and the DATE function calculates the date as explained above.

Incase you want to extracting a year value from a Julian date

If you have a date in a Julian format, for example, 10015, where the format is “dddyy”, you can adapt the formula as follows:

=DATE(RIGHT(A1,2),1,LEFT(A1,3))

Here, we use RIGHT to extract the 2 characters from the right for year, and LEFT to extract 3 characters from the left for day. Month is supplied as 1, like the first example.

Post navigation

Previous Post:

DECIMAL function: Description, Usage, Syntax, Examples and Explanation

Next Post:

AVERAGE function: Description, Usage, Syntax, Examples and Explanation

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Learn Basic Excel

Ribbon
Workbook
Worksheets
Format Cells
Find & Select
Sort & Filter
Templates
Print
Share
Protect
Keyboard Shortcuts

Categories

  • Charts
  • Data Analysis
  • Data Validation
  • Excel Functions
    • Cube Functions
    • Database Functions
    • Date and Time Functions
    • Engineering Functions
    • Financial Functions
    • Information Functions
    • Logical Functions
    • Lookup and Reference Functions
    • Math and Trig Functions
    • Statistical Functions
    • Text Functions
    • Web Functions
  • Excel VBA
  • Excel Video Tutorials
  • Formatting
  • Grouping
  • Others

Logical Functions

  • AND function: Description, Usage, Syntax, Examples and Explanation
  • Invoice status with nested if in Excel
  • SWITCH function: Description, Usage, Syntax, Examples and Explanation
  • How to use Excel AND Function
  • Complete List of Excel Logical Functions, References and Examples

Date Time

  • Dynamic date list in Excel
  • List holidays between two dates in Excel
  • How to calculate percent of year complete in Excel
  • EOMONTH function: Description, Usage, Syntax, Examples and Explanation
  • WEEKNUM function: Description, Usage, Syntax, Examples and Explanation

Grouping

  • How to randomly assign data to groups in Excel
  • Group times into 3 hour buckets in Excel
  • Group arbitrary text values in Excel
  • Group numbers at uneven intervals in Excel
  • Group times into unequal buckets in Excel

General

  • How to calculate decrease by percentage in Excel
  • Mark Workbook as Final in Excel
  • AutoFit Column Width, AutoFit Row Height in Excel
  • Create dynamic workbook reference to another workbook in Excel
  • Currency vs Accounting Format in Excel
© 2025 xlsoffice . All Right Reserved. | Teal Smiles | Abbreviations And Their Meaning