# 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.](https://api-docs.rightsline.com/date-math/datemath-create)      |
| GET    | /v4/:entityType/:entityID/date-math | [Retrieve date math.](https://api-docs.rightsline.com/date-math/date-math-retrieve) |
| PUT    | /v4/date-math                       | [Update date math.](https://api-docs.rightsline.com/date-math/update-date-math)     |
| DELETE | /v4/date-math/:id                   | [Delete date math.](https://api-docs.rightsline.com/date-math/delete-date-math)     |