[Table] header: Date | Tournament | Location | Purse( $ ) | Winner | Score | 1st Prize( $ ) row 1 : Jan 7 | MONY Senior Tournament of Champions | California | 250000 | George Archer (2) | 283 (-5) | 37500
row 2 : Feb 4 | Royal Caribbean Classic | Florida | 400000 | Lee Trevino (1) | 206 (-7) | 60000
row 3 : Feb 11 | GTE Suncoast Classic | Florida | 450000 | Mike Hill (1) | 207 (-9) | 67500
row 4 : Feb 18 | Aetna Challenge | Florida | 400000 | Lee Trevino (2) | 200 (-16) | 60000
row 5 : Mar 4 | Vintage Chrysler Invitational | California | 400000 | Lee Trevino (3) | 205 (-11) | 60000
row 6 : Mar 18 | Vantage at The Dominion | Texas | 300000 | Jim Dent (3) | 205 (-11) | 45000
row 7 : Apr 1 | The Tradition at Desert Mountain | Arizona | 800000 | Jack Nicklaus (1) | 206 (-10) | 120000
row 8 : Apr 15 | PGA Seniors' Championship | Florida | 450000 | Gary Player (15) | 281 (-7) | 75000
row 9 : Apr 29 | Murata Reunion Pro-Am | Texas | 400000 | Frank Beard (1) | 207 (-9) | 60000
row 10 : May 6 | Las Vegas Senior Classic | Nevada | 450000 | Chi Chi Rodriguez (14) | 204 (-12) | 67500
row 11 : May 13 | Southwestern Bell Classic | Oklahoma | 450000 | Jimmy Powell (1) | 208 (-8) | 67500
row 12 : May 20 | Doug Sanders Kingwood Celebrity Classic | Texas | 300000 | Lee Trevino (4) | 203 (-13) | 45000
row 13 : May 27 | Bell Atlantic Classic | Pennsylvania | 500000 | Dale Douglass (6) | 206 (-4) | 75000
row 14 : Jun 3 | NYNEX Commemorative | New York | 350000 | Lee Trevino (5) | 199 (-11) | 52500
row 15 : Jun 10 | Mazda Senior Tournament Players Championship | Michigan | 1000000 | Jack Nicklaus (2) | 261 (-27) | 150000
row 16 : Jun 17 | MONY Syracuse Senior Classic | New York | 400000 | Jim Dent (4) | 199 (-17) | 60000
row 17 : Jun 24 | Digital Seniors Classic | Massachusetts | 350000 | Bob Charles (14) | 203 (-13) | 52500
row 18 : Jul 1 | U.S. Senior Open | New Jersey | 450000 | Lee Trevino (6) | 275 (-13) | 90000
row 19 : Jul 8 | Northville Long Island Classic | New York | 450000 | George Archer (3) | 208 (-8) | 67500
row 20 : Jul 15 | Kroger Senior Classic | Ohio | 600000 | Jim Dent (5) | 133 (-9) | 90000
row 21 : Jul 22 | Ameritech Senior Open | Michigan | 500000 | Chi Chi Rodriguez (15) | 203 (-13) | 75000
row 22 : Jul 29 | Newport Cup | Rhode Island | 300000 | Al Kelley (1) | 134 (-10) | 45000
row 23 : Aug 5 | PaineWebber Invitational | North Carolina | 450000 | Bruce Crampton (16) | 205 (-11) | 67500
row 24 : Aug 12 | Sunwest Bank Charley Pride Senior Golf Classic | New Mexico | 350000 | Chi Chi Rodriguez (16) | 205 (-11) | 52500
row 25 : Aug 19 | Showdown Classic | Utah | 350000 | Rives McBee (2) | 202 (-14) | 52500
row 26 : Aug 26 | GTE Northwest Classic | Washington | 350000 | George Archer (4) | 205 (-11) | 52500
row 27 : Sep 2 | GTE North Classic | Indiana | 450000 | Mike Hill (2) | 201 (-15) | 67500
row 28 : Sep 9 | Vantage Bank One Classic | Kentucky | 300000 | Rives McBee (3) | 201 (-15) | 45000
row 29 : Sep 16 | Greater Grand Rapids Open | Michigan | 300000 | Don Massengale (1) | 134 (-8) | 45000
row 30 : Sep 23 | Crestar Classic | Virginia | 350000 | Jim Dent (6) | 202 (-14) | 52500
row 31 : Sep 30 | Fairfield Barnett Space Coast Classic | Florida | 300000 | Mike Hill (3) | 200 (-16) | 45000
row 32 : Oct 7 | Vantage Championship | North Carolina | 1500000 | Charles Coody (2) | 202 (-14) | 202500
row 33 : Oct 14 | Gatlin Brothers Southwest Senior Classic | Texas | 300000 | Bruce Crampton (17) | 204 (-12) | 45000
row 34 : Oct 21 | Transamerica Senior Golf Championship | California | 500000 | Lee Trevino (7) | 205 (-11) | 75000
row 35 : Oct 28 | Rancho Murieta Senior Gold Rush | California | 400000 | George Archer (5) | 204 (-12) | 60000
row 36 : Nov 4 | Security Pacific Senior Classic | California | 500000 | Mike Hill (4) | 201 (-12) | 75000
row 37 : Dec 9 | GTE Kaanapali Classic | Hawaii | 450000 | Bob Charles (15) | 206 (-4) | 67500 [/Table] Answer this question based on the above table: When was the tournament in Washington held?

Answer: Aug 26