No I haven't seen either of these here, but perhaps this is influenced somehow by Time Zone settings? Is this a schedule imported from other resource (P6?) or created in Unifier?
from oracle knowledgebase:
The Time Zone setting affects the date stamp that appears on the actions that you perform in Unifier, such as
saving or uploading files, and also affects due dates for tasks that are assigned to you. Within an Audit Log the
date and time stamp of each event reflect users’ current time zone as set in their User Preferences.
For user-defined reports, the time zone shown is used for date fields in the report. The default time zone is
defined when the report is designed. It can reflect the time zone from your user preferences or be fixed to a
particular time zone, such as the project location or company headquarters.
Time Zone can also come into play when you create a "bidder" account so that vendors can log into Unifier and
submit bids. Set the Time Zone field to match that of the bid requestor’s (either your company’s time zone, or
the zone from which the bid invitation is sent). If your bidders are in a different time zone from yours, this will
protect them from mistakenly submitting bids after the bidding process is closed.
Refer to the Unifier User Guide and Unifier Administration Guide for additional details.