I second all of that. We're about to deploy non-AudioMoth units in Cuba and the Dominican Republic in an incredibly remote area with limited access (military-controlled lands in the case of Cuba where our collaborators can't just come and go). Even though sunrise time doesn't change much at those latitudes, it changes enough so that we decided we couldn't use our AudioMoths for this project. For our case, we'd like the ability to record 30-minutes pre-sunrise to 30-minutes post sunrise every day.