Fixing bug due to inclusive end date

[fletchapin]

Pull request recommendations:

• Name your pull request your-development-type/short-description. Ex: feature/gui
• Link to any relevant issue in the PR description. Ex: Resolves [ENH: Support optimization of flexibility metrics #12]
• Provide context of changes.
• Provide relevant tests for your feature or bug fix.
• Provide or update documentation for any feature added by your pull request.

Thanks for contributing!

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.38%. Comparing base (272d0d8) to head (e975d9d).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #52   +/-   ##
=======================================
  Coverage   94.38%   94.38%           
=======================================
  Files          10       10           
  Lines        1603     1603           
=======================================
  Hits         1513     1513           
  Misses         90       90           

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