Four days later they take to the road to face Kilmarnock before returning to Pittodrie to tackle St Mirren, now under the guidance of former No 2 Tommy Craig.
A trip to Scottish Cup holders St Johnstone is next up for Derek McInnes' side before they end the month with a home game against Partick Thistle.
Following a two-week international break September kicks off with a trip to champions Celtic (13th) before two home games against Ross County (20th) and Inverness Caley Thistle seven days later.
The festive period has been kind to Aberdeen's travelling fans with home games against Kilmarnock (December 20) and St Johnstone (January 1) either side of a 'short' trip to Inverness (December 27).
Pre-split Aberdeen entertain Caley Thistle at Pittodrie on April 8 before ending the first part of the campaign with a trip to Rugby Park three days later.
Opening three games:
August 9 - Dundee United (h)
August 13 - Kilmarnock (a)
August 16 - St Mirren (h)