Currently, in https://dashboards.rdoproject.org/rdo-dev, for the puppet promotion pipeline, we compute the number of days by subtracting the current timestamp and the timestamp of the latest promoted build in puppet-passed-ci.
The problem with that is when there is no new commit upstream since x days, the computed result will x days, and the tile will be in red (if x>3).

The solution:
We should compute the number of days by subtracting the timestramp of the latest build in current and the one of the latest build promoted in puppet-passed-ci.