IBM Support

Daylight Savings Time - TM1 chore times need to be adjusted for time change



The time has adjusted due to the beginning/end of Daylight Savings time, and the TM1 chores are running an hour behind/late or ahead based on time change.


TM1 cannot automatically adjust to reflect the time change.

Resolving The Problem

TM1 provides no automatic accommodation for Daylight Savings Time/Summer Time, as TM1 is based on Greenwich Mean Time (GMT). If the system clock on the TM1 server (machine) is set to use local Daylight Savings Time/Summer Time, the chore must be edited at the beginning and end of Daylight Savings Time/Summer Time to maintain a consistent local chore execution schedule.

On the day that Daylight Saving Time/Summer Time begins, edit the chore to use the current date and desired start time. On the day the Daylight Savings Time/Summer Time ends, again edit the chore to use the current date and desired start time.
1) Right-click on chore and deactivate the schedule.

2) Right-click again on the chore and choose Edit. Click Next, then adjust the date to reflect the current date. The time can also be adjusted if desired, or left as it was.

3) Click Finish. You will notice in the server log that the chore will now start at the correct time.

[{"Product":{"code":"SS9RXT","label":"Cognos TM1"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"TM1","Platform":[{"code":"PF033","label":"Windows"}],"Version":"9.5.2;9.5.1;9.5;9.4 MR1;9.4;10.1.0;10.1.1","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Historical Number


Document Information

Modified date:
15 June 2018