Bug: Fix parse duration for day

[idafurjes]

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #36445

Special notes for your reviewer:

[wbrowne]

I think this looks good. Nice work! Ready for review I think 😄

[wbrowne]

Tested and looks good!

[grafanabot]

The backport to v8.0.x failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new branch
git switch --create backport-36942-to-v8.0.x origin/v8.0.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x 1a52dd57cff92967250b7b2f735a21c78f0747fa
# Push it to GitHub
git push --set-upstream origin backport-36942-to-v8.0.x
git switch main
# Remove the local backport branch
git branch -D backport-36942-to-v8.0.x

Then, create a pull request where the base branch is v8.0.x and the compare/head branch is backport-36942-to-v8.0.x.