Split dataset based on timeframe

Hi,

Let’s say I have GISAID data spanning 3 months. I want biweekly snapshots from earliest to latest date.
How do I go about telling the build to do this, without having to specify what those dates are.
Does it have a … min.date()/max.date(); then min.date() + 14 days … etc etc equivalent?

Perhaps I would have to instead create a build for each slice, so to speak.
not sure how i should be thinking about this.

What do you mean by snapshots? What do you want the output to be? Sequences, an auspice.json build?