How to Use the DAY Function in WPS on Windows

Last updated:July 23, 2026

Use the DAY function through 3 how-to topics, all available without membership; start from the How-to Index and follow the entry path and steps for each task.

How-to Index

No.TopicMembership Requirement
11. Create a formula field and use DAYFree
22. Check the parameter format and enter it correctlyFree
33. Combine DAY with other formulasFree

How-to Guide

1. Create a formula field and use DAY

Entry path: Add Field → Formula

  1. Open the multidimensional table that you want to edit.
  2. Click Add Field.
  3. Select Formula as the field type.
  4. Enter a formula that includes DAY in the formula editor.
  5. Click Confirm and check whether the result appears in the record.

Success Criteria

  • Interface result: A new formula field appears in the table.
  • Next action available: You can see the calculated result in each record.
  • No unwanted change: Existing source fields stay unchanged.

Tips While Using

  • Common mistake: Using plain text as the date argument can cause unexpected results.
  • Environment note: You need permission to edit the structure of the current multidimensional table.

2. Check the parameter format and enter it correctly

Entry path: Formula Editor → Function Library → DAY

  1. Open the function library in the formula editor.
  2. Select DAY to review its format guidance.
  3. Enter the target date argument as prompted.
  4. Check whether the referenced field is a date field or a value that can participate in date calculation.
  5. Save the formula and verify the returned result.

Success Criteria

  • Interface result: The formula editor recognizes the DAY syntax normally.
  • Next action available: The saved formula returns a day number.
  • No unwanted change: Other formula fields are not affected.

Tips While Using

  • Common mistake: Incomplete parameter formatting or a mismatched data type in the referenced field.
  • Environment note: Different source values can affect the result, so testing with a sample record is helpful.

3. Combine DAY with other formulas

Entry path: Formula Editor

  1. Create or edit a formula field.
  2. Enter a combined formula that includes DAY.
  3. Use the DAY result as a condition or input for another formula.
  4. Save the formula and confirm that the result updates when the source date changes.

Success Criteria

  • Interface result: The combined formula saves successfully.
  • Next action available: Changing the source date refreshes the result.
  • No unwanted change: The same formula logic can be reused across records.

Tips While Using

  • Common mistake: Deeply nested formulas can make parentheses or parameter positions easier to misplace.
  • Environment note: Confirm that DAY works correctly on its own before nesting it inside other formulas.