12.15 start for Senior MGP
The weather is having the final say at the Festival of Motorcycling.
Mist and low cloud over the mountain has led to a further hour's delay to the schedule.
Roads won't close now until 11.30am, with the final race of the week, the four lap Senior MGP, now set to get underway at 12.15.
On current timings, roads will open again from 2.25pm.
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