[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [CSS](./puppeteer.protocol.css.md) > [TakeCoverageDeltaResponse](./puppeteer.protocol.css.takecoveragedeltaresponse.md) > [timestamp](./puppeteer.protocol.css.takecoveragedeltaresponse.timestamp.md) ## Protocol.CSS.TakeCoverageDeltaResponse.timestamp property Monotonically increasing time, in seconds. Signature: ```typescript timestamp: number; ```