On Tue, Apr 6, 2021 at 12:23 PM David A. Harding <dave@dtrt.org> wrote:

  You need to upgrade by $( date -d "$MIN_LOCKIN_TIME + 11 days" )

Ten minute estimators can say:

  You need to upgrade by $( date -d "$MIN_LOCKIN_TIME + $((10 * 2016)) minutes" )

And nine minute estimators can say:

  You need to upgrade by $( date -d "$MIN_LOCKIN_TIME + $((9 * 2016)) minutes" )

It isn't  "$MIN_LOCKIN_TIME + $((10 * 2016)) minutes". It's "$MIN_LOCKIN_TIME + time until next retargeting period + $((10 * 2016)) minutes".