ISO Week Numbers 1989

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All 52 ISO weeks in 1989. Week 1 is the first week with at least four days in January; weeks run Monday through Sunday.

1988 Week Number Calculator1990
WeekISO codeYYWWWeek startsWeek ends
11989-W018901Monday, January 2, 1989Sunday, January 8, 1989
21989-W028902Monday, January 9, 1989Sunday, January 15, 1989
31989-W038903Monday, January 16, 1989Sunday, January 22, 1989
41989-W048904Monday, January 23, 1989Sunday, January 29, 1989
51989-W058905Monday, January 30, 1989Sunday, February 5, 1989
61989-W068906Monday, February 6, 1989Sunday, February 12, 1989
71989-W078907Monday, February 13, 1989Sunday, February 19, 1989
81989-W088908Monday, February 20, 1989Sunday, February 26, 1989
91989-W098909Monday, February 27, 1989Sunday, March 5, 1989
101989-W108910Monday, March 6, 1989Sunday, March 12, 1989
111989-W118911Monday, March 13, 1989Sunday, March 19, 1989
121989-W128912Monday, March 20, 1989Sunday, March 26, 1989
131989-W138913Monday, March 27, 1989Sunday, April 2, 1989
141989-W148914Monday, April 3, 1989Sunday, April 9, 1989
151989-W158915Monday, April 10, 1989Sunday, April 16, 1989
161989-W168916Monday, April 17, 1989Sunday, April 23, 1989
171989-W178917Monday, April 24, 1989Sunday, April 30, 1989
181989-W188918Monday, May 1, 1989Sunday, May 7, 1989
191989-W198919Monday, May 8, 1989Sunday, May 14, 1989
201989-W208920Monday, May 15, 1989Sunday, May 21, 1989
211989-W218921Monday, May 22, 1989Sunday, May 28, 1989
221989-W228922Monday, May 29, 1989Sunday, June 4, 1989
231989-W238923Monday, June 5, 1989Sunday, June 11, 1989
241989-W248924Monday, June 12, 1989Sunday, June 18, 1989
251989-W258925Monday, June 19, 1989Sunday, June 25, 1989
261989-W268926Monday, June 26, 1989Sunday, July 2, 1989
271989-W278927Monday, July 3, 1989Sunday, July 9, 1989
281989-W288928Monday, July 10, 1989Sunday, July 16, 1989
291989-W298929Monday, July 17, 1989Sunday, July 23, 1989
301989-W308930Monday, July 24, 1989Sunday, July 30, 1989
311989-W318931Monday, July 31, 1989Sunday, August 6, 1989
321989-W328932Monday, August 7, 1989Sunday, August 13, 1989
331989-W338933Monday, August 14, 1989Sunday, August 20, 1989
341989-W348934Monday, August 21, 1989Sunday, August 27, 1989
351989-W358935Monday, August 28, 1989Sunday, September 3, 1989
361989-W368936Monday, September 4, 1989Sunday, September 10, 1989
371989-W378937Monday, September 11, 1989Sunday, September 17, 1989
381989-W388938Monday, September 18, 1989Sunday, September 24, 1989
391989-W398939Monday, September 25, 1989Sunday, October 1, 1989
401989-W408940Monday, October 2, 1989Sunday, October 8, 1989
411989-W418941Monday, October 9, 1989Sunday, October 15, 1989
421989-W428942Monday, October 16, 1989Sunday, October 22, 1989
431989-W438943Monday, October 23, 1989Sunday, October 29, 1989
441989-W448944Monday, October 30, 1989Sunday, November 5, 1989
451989-W458945Monday, November 6, 1989Sunday, November 12, 1989
461989-W468946Monday, November 13, 1989Sunday, November 19, 1989
471989-W478947Monday, November 20, 1989Sunday, November 26, 1989
481989-W488948Monday, November 27, 1989Sunday, December 3, 1989
491989-W498949Monday, December 4, 1989Sunday, December 10, 1989
501989-W508950Monday, December 11, 1989Sunday, December 17, 1989
511989-W518951Monday, December 18, 1989Sunday, December 24, 1989
521989-W528952Monday, December 25, 1989Sunday, December 31, 1989

ISO weeks start on Monday. Week 1 is the first week with at least four days in the new year.