See Also
This topic applies to both Software Logger and the Logger Appliance.
To ensure that all events are returned after the system time is adjusted on the Logger at the start and end of the US Daylight Savings Time period (DST), make sure to follow the guidelines below:
To search for events that occur prior the end of the DST (time is set back one hour), subtract one hour to the original start and end date time. For example, an original date from 03/12/2021 00:00:00 to 03/12/2021 23:59:59 will need to be searched as 03/11/2021 23:00:00 to 03/12/2021 22:59:59.
To search for events that occur prior the start of the DST (time is set ahead one hour), sum an additional hour to the original start and end time. For example, an original date from 03/12/2021 00:00:00 to 03/12/2021 23:59:59 will need to be searched as 03/12/2021 01:00:00 to 03/13/2021 00:59:59.
Scheduled operations on Logger such as reports, event archives, and file transfers are also impacted after system time is adjusted.
Operations scheduled for the hour lost at the start of DST (for example, on March 14, 2021) are not run on the day of time adjustment. Similarly, operations scheduled for the hour gained at the end of the DST (for example, on November 7, 2021) are run at standard time instead of DST time.
The software checks to see if Daylight Savings Time applies. If a query’s time range falls in between Daylight Savings Time (DST) changes, a message stating “Daylight Savings Time In Effect” displays. If not, then the “Daylight Savings Time Not In Effect” message displays.