Available in preview, you can now use custom calendars, such as fiscal or retail calendars, for dialects that support it.

Available in preview, you can now use custom calendars, such as fiscal or retail calendars, for dialects that support it. The custom calendar feature lets your Looker developers create a LookML model of a custom calendar table in your database and then create custom calendar dimension groups that use the custom calendar. Your end users can then create Explore queries using the custom calendar dimension timeframes.

In addition, your LookML developers can create period-over-period measures based on custom calendar dimension groups.

Note: This item was updated on March 19, 2026.