To me, the date in the blog is indication how relevant it is. So if you updated links and info in 2y blog to make it relevant again, I don't mind if the date wo

To me, the date in the blog is indication how relevant it is. So if you updated links and info in 2y blog to make it relevant again, I don't mind if the date would be today. But probably best would be to put 2 dates: original publish date, and date last modification/relevance.