Is data about how long links are on the front page available publicly anywhere?
There are a number of third party sites that do this, such as hnrankings.info:
https://hnrankings.info/46339600/
https://hnrankings.info/46004118/
There are a number of third party sites that do this, such as hnrankings.info:
https://hnrankings.info/46339600/
https://hnrankings.info/46004118/