Line L29 from track 3 at Östra station (ÖST) to Näsbypark (NBP) 12:10,
12:40,13:10 or 13:40 to be at Näsbypark 12:30,13:00,
13:30 or 14:00 and walk about 50 meters to the left to
the OnInn at 14:10 or earlier and you should preferably
be at the front of the train at Näsbypark...
And when you are going back the train leaves at 7 and 37 minutes
past from Näsbypark to be at Östra station at 27 and 57 minutes past every hour...