Add friday the 20th to the schedule

Why is this change being made?

Because of travel arrangements, the 20th was originally not possible to be included for both CEO shadows, but now for at least me it is possible. So adding Friday the 20th back to the schedule.

Does this MR meet the acceptance criteria?

Assign to DRI

• Did you assign this change to the correct DRI of the page or information you are changing?

Conformity

• Added description to this MR explaining the reasons for the proposed change, per say-why-not-just-what