Repository sync schedule moves based on timezone changes like daylight savings time.
User runs sync plan daily on '10.00 -07:00'(PDT). When user switches back from the daily saving to PST (-08:00), the repository sync started 1 hour earlier (09:00 PST).
When I check the schedule time using pulp admin, I notice that the "-07:00" is included in the scheduled time so it doesn't affected by daylight saving.
pulp-admin --username admin --password <password> rpm repo sync schedules list --repo-id some_orgs-Red_Hat_Satellite_Capsule-Red_Hat_Satellite_Capsule_6_2_for_RHEL_7_Server_RPMs_x86_64 Schedule: 2017-05-29T00:00:00-07:00/PT1H Id: 592b9eb1f7ecdd20717692c4 Enabled: True Next Run: 2017-05-29T07:00:00Z