> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Dates

> The Dates dimension in FRTBCombinedCube, covering date hierarchies for risk value dates, trade dates, book structure dates, and the OmegaDate slicing selector for weekly reference periods

The **Dates** dimension contains the following hierarchies:

<CardGroup cols={2}>
  <Card title="BookStructureDate" href="../../bookstructuredate">Trade date from the BookHierarchy structure.</Card>
  <Card title="Date" href="../../date">Risk value date.</Card>
  <Card title="OmegaDate" href="../../omegadate">Slicing date selector for weekly reference.</Card>
  <Card title="TradeDates" href="../../tradedates">Trade date from trade attributes.</Card>
</CardGroup>