Just noticed this on the site. On the Brighton race it had "Tue 6 Oct | 7f Nursery | GOING DOWN" and then "GOING BEHIND".
So low-key I barely noticed. How long have they been there? Is it on all racing? Are there any other values?
It doesn't seem to be mentioned in any of the recent API-NG release notes, which is a shame; it'd be a much more useful way of timing some things than using time relative to the scheduled 'off' time.