> ## 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.

# OmegaDate

|                 |                                                                                                                                             |
| --------------- | ------------------------------------------------------------------------------------------------------------------------------------------- |
| **Description** | Slicing date selector for weekly reference.                                                                                                 |
| **Reference**   | [\[MAR33.15\]](https://www.bis.org/basel_framework/chapter/MAR/33.htm?inforce=20230101\&published=20200327#paragraph_MAR_33_20230101_33_15) |
| **Dimension**   | Dates                                                                                                                                       |
| **Hierarchy**   | OmegaDate                                                                                                                                   |
| **Levels**      | \[OmegaDate]                                                                                                                                |

This slicing hierarchy is used to select the right date used to compute the  [Omega](./omega-ima) measure.
You can set it up with the property `ima.date.specific.omega` which gives the different possible day references. It is a list of human-readable key-value pairs.