> ## Documentation Index > Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # TimeRange ## Example Usage ```typescript theme={null} import { TimeRange } from "@openrouter/sdk/models/operations"; let value: TimeRange = { end: new Date("2027-12-31T23:59:59Z"), start: new Date("2027-12-31T23:59:59Z"), }; ``` ## Fields | Field | Type | Required | Description | Example | | ------- | --------------------------------------------------------------------------------------------- | -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------ | -------------------- | | `end` | [Date](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date) | :heavy\_check\_mark: | ISO 8601 UTC timestamp. Must include seconds (YYYY-MM-DDTHH:MM:SSZ; fractional seconds allowed); minute-precision timestamps are rejected. | 2027-12-31T23:59:59Z | | `start` | [Date](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date) | :heavy\_check\_mark: | ISO 8601 UTC timestamp. Must include seconds (YYYY-MM-DDTHH:MM:SSZ; fractional seconds allowed); minute-precision timestamps are rejected. | 2027-12-31T23:59:59Z |