> For the complete documentation index, see [llms.txt](https://api-docs.rightsline.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://api-docs.rightsline.com/date-math/date-math-overview.md).

# Overview

Date Math™ is a complex and powerful tool. It allows you to calculate and create relationships between dates in the Rightsline system. Contact your Rightsline representative for a detailed walkthrough or further information.

### Endpoints

| Method | Endpoint                            | Description                                             |
| ------ | ----------------------------------- | ------------------------------------------------------- |
| POST   | /v4/date-math                       | [Create date math.](/date-math/datemath-create.md)      |
| GET    | /v4/:entityType/:entityID/date-math | [Retrieve date math.](/date-math/date-math-retrieve.md) |
| PUT    | /v4/date-math                       | [Update date math.](/date-math/update-date-math.md)     |
| DELETE | /v4/date-math/:id                   | [Delete date math.](/date-math/delete-date-math.md)     |