Asiana cargo flights over UK

#1
Does anyone know the schedule of Asiana cargo flight OZ597, ICN-ANC-JFK-BRU.....it passed over southern England yesterday afternoon (29th) but I saw it too late to get a decent photo. After searching online I posted a question on the Asiana facebook page but all they told me is that it is a weekly flight but not what its scheduled times are.
Yesterdays flight was apparently delayed so Im not sure when it is due to leave JFK - I would like to set an alert in the hope I would see it again and if clear skies get a better photo!! But its a longshot if it came over in daylight again and with clear skies!

Hope someone may be able to help. Do cargo flights tend to keep to their schedules?
Thanks.