This article explains how to share a YouTube video with the timestamp embedded, so that it automatically starts at a specific part of the video when the link is clicked. The desktop site has a built-in tool for this; for mobile users, there is a manual workaround.
Share YouTube link that starts at a specific time 2023
By linking to a specific time in a YouTube video, you can jump directly to that part when you click the link. This is especially useful for really long videos. This is easy to do if you are on the desktop site.
Click Share directly below the video.
In the pop-up window, check the box next to Start at.