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Formula Errors

Fix Excel Holiday Calendar Formula Errors in German Installations

Maira MehtabMaira Mehtab Sep 22, 2026 869 views

Question details

The user needs to fix a dynamic Excel calendar that calculates dates correctly but fails to apply holiday formatting due to missing worksheets or formula syntax conflicts in a German Excel installation.

Product
Microsoft Excel
Device & OS
not provided
Scenario
Applying conditional formatting or looking up dates in a dynamic holiday calendar using localized formulas.
Observed behavior
The calendar successfully calculates dates, but holiday formatting fails to apply or triggers a syntax error due to regional language differences or missing references.
Before you start

Verify the exact name of your holiday reference sheet (e.g., 'Feiertag') and check whether your system's regional settings use commas or semicolons for formula separators.

Solution 1Recommended

Verify the Holiday Worksheet Name and References

Ensure the holiday worksheet exists and is correctly referenced in your calendar's formulas.

A common cause of broken calendar formatting is a missing or renamed reference worksheet. If the formula looks for a sheet that doesn't exist, it will return an error and fail to format the dates.

1
Check sheet tabs

Look at the worksheet tabs at the bottom of your Excel window to confirm the holiday list worksheet exists (commonly named 'Feiertag' in German templates).

2
Verify formula references

Select a cell in your calendar that contains the broken formatting formula and ensure the sheet name exactly matches the reference in the formula.

3
Update range selection

Confirm that the selected range for the holidays covers all the relevant dates for the current calendar year.

Use Named Ranges: To prevent reference errors, consider defining a Named Range for your holiday list (e.g., 'Holidays2024') and using that name in your formulas instead of direct cell references.
Create Dynamic Calendars with WPS Spreadsheet

Build and Format Dynamic Holiday Calendars Easily in WPS Office

WPS Spreadsheet provides robust formula support and seamless compatibility with Microsoft Excel formats, making it easy to build and format dynamic calendars without worrying about regional syntax conflicts.

  1. 1. Create a new calendar: Open WPS Spreadsheet and create a new blank workbook, or use one of the built-in calendar templates.
  2. 2. Set up a holiday list: Create a dedicated sheet named 'Holidays' and list the dates you want to highlight for the year.
  3. 3. Apply conditional formatting: Select your calendar dates, go to the Home tab, and choose Conditional Formatting to set a rule that checks against your holiday list.
  4. 4. Customize appearance: Choose a specific fill color and font style for the holidays, then click OK to apply the dynamic highlighting.
100% compatible with Microsoft Excel formats (.xlsx and .xls)Supports standard spreadsheet functions and localized formula syntaxIntuitive conditional formatting tools for highlighting holidays and weekendsLightweight, fast, and free to use across multiple operating systems
microsoft office alternative - wps office

Frequently Asked Questions

Why does my Excel formula work in English but not in German?

Excel localizes function names and parameter separators based on regional settings. For example, the English 'IF' becomes 'WENN' in German, and standard comma separators are replaced by semicolons. You must adjust the syntax to match your installation language.

How do I fix the #NAME? error in my localized Excel calendar?

The #NAME? error usually means Excel doesn't recognize the function name or a named range. Check if an English function was accidentally used in a German installation and manually translate it to the localized equivalent.

Can I force Excel to use English formulas on a German system?

Yes, you can temporarily change the Excel display language to English by navigating to File > Options > Language. This allows you to input and edit formulas using standard English syntax and commas.

Why is conditional formatting not applying to my holiday dates?

This often happens if the formula driving the conditional formatting returns an error, if the referenced holiday list is on a deleted/renamed worksheet, or if the date formats on the calendar and holiday list do not match.