ISO Week Numbers 1986

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All 52 ISO weeks in 1986. Week 1 is the first week with at least four days in January; weeks run Monday through Sunday.

1985 Week Number Calculator1987
WeekISO codeYYWWWeek startsWeek ends
11986-W018601Monday, December 30, 1985Sunday, January 5, 1986
21986-W028602Monday, January 6, 1986Sunday, January 12, 1986
31986-W038603Monday, January 13, 1986Sunday, January 19, 1986
41986-W048604Monday, January 20, 1986Sunday, January 26, 1986
51986-W058605Monday, January 27, 1986Sunday, February 2, 1986
61986-W068606Monday, February 3, 1986Sunday, February 9, 1986
71986-W078607Monday, February 10, 1986Sunday, February 16, 1986
81986-W088608Monday, February 17, 1986Sunday, February 23, 1986
91986-W098609Monday, February 24, 1986Sunday, March 2, 1986
101986-W108610Monday, March 3, 1986Sunday, March 9, 1986
111986-W118611Monday, March 10, 1986Sunday, March 16, 1986
121986-W128612Monday, March 17, 1986Sunday, March 23, 1986
131986-W138613Monday, March 24, 1986Sunday, March 30, 1986
141986-W148614Monday, March 31, 1986Sunday, April 6, 1986
151986-W158615Monday, April 7, 1986Sunday, April 13, 1986
161986-W168616Monday, April 14, 1986Sunday, April 20, 1986
171986-W178617Monday, April 21, 1986Sunday, April 27, 1986
181986-W188618Monday, April 28, 1986Sunday, May 4, 1986
191986-W198619Monday, May 5, 1986Sunday, May 11, 1986
201986-W208620Monday, May 12, 1986Sunday, May 18, 1986
211986-W218621Monday, May 19, 1986Sunday, May 25, 1986
221986-W228622Monday, May 26, 1986Sunday, June 1, 1986
231986-W238623Monday, June 2, 1986Sunday, June 8, 1986
241986-W248624Monday, June 9, 1986Sunday, June 15, 1986
251986-W258625Monday, June 16, 1986Sunday, June 22, 1986
261986-W268626Monday, June 23, 1986Sunday, June 29, 1986
271986-W278627Monday, June 30, 1986Sunday, July 6, 1986
281986-W288628Monday, July 7, 1986Sunday, July 13, 1986
291986-W298629Monday, July 14, 1986Sunday, July 20, 1986
301986-W308630Monday, July 21, 1986Sunday, July 27, 1986
311986-W318631Monday, July 28, 1986Sunday, August 3, 1986
321986-W328632Monday, August 4, 1986Sunday, August 10, 1986
331986-W338633Monday, August 11, 1986Sunday, August 17, 1986
341986-W348634Monday, August 18, 1986Sunday, August 24, 1986
351986-W358635Monday, August 25, 1986Sunday, August 31, 1986
361986-W368636Monday, September 1, 1986Sunday, September 7, 1986
371986-W378637Monday, September 8, 1986Sunday, September 14, 1986
381986-W388638Monday, September 15, 1986Sunday, September 21, 1986
391986-W398639Monday, September 22, 1986Sunday, September 28, 1986
401986-W408640Monday, September 29, 1986Sunday, October 5, 1986
411986-W418641Monday, October 6, 1986Sunday, October 12, 1986
421986-W428642Monday, October 13, 1986Sunday, October 19, 1986
431986-W438643Monday, October 20, 1986Sunday, October 26, 1986
441986-W448644Monday, October 27, 1986Sunday, November 2, 1986
451986-W458645Monday, November 3, 1986Sunday, November 9, 1986
461986-W468646Monday, November 10, 1986Sunday, November 16, 1986
471986-W478647Monday, November 17, 1986Sunday, November 23, 1986
481986-W488648Monday, November 24, 1986Sunday, November 30, 1986
491986-W498649Monday, December 1, 1986Sunday, December 7, 1986
501986-W508650Monday, December 8, 1986Sunday, December 14, 1986
511986-W518651Monday, December 15, 1986Sunday, December 21, 1986
521986-W528652Monday, December 22, 1986Sunday, December 28, 1986

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