View calendar via Date and Time Properties as non-admin
It is inconvenient that I cannot open Date and Time Properties as non-admin. Non-admins should not be able to change the date and time, but should be able to view it. Sometimes, I want to see what the date of next Wed is. Now I need to practice doing math in my brain if I run as non-admin. :)
Instead of using my rusty brain, I just grant myself "Change the System Time" privilege via Local Security Policy.
1. Open Local Security Policy
2. Go to Local Policies -> User Rights Assignment
3. Double-click on "Change the system time"
4. Follow the GUI to add myself to the privilege