Computing Topics --> Help With Application Programs --> Calendar Applications --> Corporate Time --> Corporate Time for Macintosh --> Oracle Calendar and 2007's New Daylight Saving Time -->

Oracle Calendar and 2007's New Daylight Saving Time

On Saturday, February 2, 2007 at 11:00 p.m., the Oracle Calendar server was upgraded with the new Daylight Saving Time rules. As a result of the date changes, events which were previously scheduled to start between the new and old Daylight Saving Time start dates, and between the new and old Daylight Saving Time end dates, may appear one hour later than intended.

Any affected events must be manually adjusted in order to restore their former start times.

• New Daylight Saving Time Rules
• DST and Oracle Calendar
• Adjust Any Affected Events

Prior to 2007, Daylight Saving Time began on the first Sunday in April and ended on the last Sunday in October.

Beginning in 2007, Daylight Saving Time begins on the second Sunday in March and ends on the first Sunday in November.

Because of the way that Oracle Calendar stores event information without maintaining time zone information; the change in Daylight Saving Time makes some events in Oracle Calendar appear to start one hour later than expected.

• Before February 2, 2007 at 11:00 p.m., an event was created under the old Daylight Saving Time rules to occur on March 30, 2007 at 1 p.m.
• The New Daylight Saving Time Rules are applied to the calendar system.
• The March 30, 2007 event will now be displayed as starting at 2 p.m.

This change affects events which were scheduled before February 2, 2007, and which take place during the interval between Daylight Saving Time's old and new start dates, and between the old and new end dates. Those intervals for upcoming years are:

Due to the way Oracle Calendar stores events, affected events must be manually adjusted to match their proper start time. To do so, event creators must log into Oracle Calendar and navigate to the affected date ranges. If an event's start time is incorrect, drag the individual event to its proper start time.

To assist in this process, there will be an e-mail sent to all creators of events scheduled during the affected dates listing meetings that might have incorrect times. In addition, a calendar Daily Note will be posted each day with information about any meetings that may be affected. (The display of notes on a Personal Digital Assistant (PDA) will vary depending on the device.) Older desktop clients might not be able to display the details of a note; if this is the case either upgrade your desktop client or use the Web Client https://calendar.umd.edu/.

NOTE: Tasks will not be listed, you must review these to make sure they are as you intended.

For Resource owners (accounts associated with reserving conference and class rooms): Only Daily Notes will be posted to the calendar since we cannot extract details on the "organizer" of the meeting. If your current desktop client cannot display note details, you will need to upgrade.

For help, please contact the Office of Information Technoloty (OIT) Help Desk.