[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Page](./puppeteer.protocol.page.md) > [LifecycleEventEvent](./puppeteer.protocol.page.lifecycleeventevent.md) > [timestamp](./puppeteer.protocol.page.lifecycleeventevent.timestamp.md) ## Protocol.Page.LifecycleEventEvent.timestamp property Signature: ```typescript timestamp: Network.MonotonicTime; ```