As far as I know, Powerpack (search it on the forum) has this feature. It’s not part of the official Dynalist though, so YMMV. It’s worth trying though.
Sorry but I don’t think this functionality belongs to Dynalist. It’s a niche use case and might confuse those who don’t need it.
We can consider turning it to a plugin once we have a plugin system in the future, so that it’s not part of core Dynalist, but still benefit those who need it.
For now I whipped up this page quickly so you can generate your dates and paste the results into Dynalist: