Outlook developed a bothersome behavior. Seemingly on random days, it would change my work hours to be later than I set them. I'd shrug my shoulders, set them back where I wanted them, and then a few days later, they'd change again.
At first, I thought the domain admins were applying a group policy. I found that it gets saved in \HKCU\Software\Microsoft\Office\version-number-here\Outlook\Options\Calendar in the CalDefStart and CalDefEnd entries. I was thinking I'd set it where I wanted it, export the registry key, and load in in my StartUp folder.