Milestone "Should have the expected due_on date" UT failing

[HowardWolosky]

The following UT is failing:

Context For creating a new milestone
      [-] Should have the expected due_on date 85ms
        Expected 2020-03-14T00:00:00.0000000Z, but got 2020-03-13T00:00:00.0000000+00:00.
        112:                 (Get-Date -Date $existingMilestone.due_on).Date | Should be $defaultMilestoneDueOn.Date
        at Invoke-LegacyAssertion, C:\Program Files\WindowsPowerShell\Modules\Pester\4.7.2\Functions\Assertions\Should.ps1: line 169
        at <ScriptBlock>, C:\projects\powershellforgithub\Tests\GitHubMilestones.tests.ps1: line 112
DONE - Operation took 2 second(s) [Updating Issue #1 on 6c28961d-202f-45a8-8f48-bed2616cbf10]