ISO Week Numbers 1998

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All 53 ISO weeks in 1998. Week 1 is the first week with at least four days in January; weeks run Monday through Sunday.

1997 Week Number Calculator1999
WeekISO codeYYWWWeek startsWeek ends
11998-W019801Monday, December 29, 1997Sunday, January 4, 1998
21998-W029802Monday, January 5, 1998Sunday, January 11, 1998
31998-W039803Monday, January 12, 1998Sunday, January 18, 1998
41998-W049804Monday, January 19, 1998Sunday, January 25, 1998
51998-W059805Monday, January 26, 1998Sunday, February 1, 1998
61998-W069806Monday, February 2, 1998Sunday, February 8, 1998
71998-W079807Monday, February 9, 1998Sunday, February 15, 1998
81998-W089808Monday, February 16, 1998Sunday, February 22, 1998
91998-W099809Monday, February 23, 1998Sunday, March 1, 1998
101998-W109810Monday, March 2, 1998Sunday, March 8, 1998
111998-W119811Monday, March 9, 1998Sunday, March 15, 1998
121998-W129812Monday, March 16, 1998Sunday, March 22, 1998
131998-W139813Monday, March 23, 1998Sunday, March 29, 1998
141998-W149814Monday, March 30, 1998Sunday, April 5, 1998
151998-W159815Monday, April 6, 1998Sunday, April 12, 1998
161998-W169816Monday, April 13, 1998Sunday, April 19, 1998
171998-W179817Monday, April 20, 1998Sunday, April 26, 1998
181998-W189818Monday, April 27, 1998Sunday, May 3, 1998
191998-W199819Monday, May 4, 1998Sunday, May 10, 1998
201998-W209820Monday, May 11, 1998Sunday, May 17, 1998
211998-W219821Monday, May 18, 1998Sunday, May 24, 1998
221998-W229822Monday, May 25, 1998Sunday, May 31, 1998
231998-W239823Monday, June 1, 1998Sunday, June 7, 1998
241998-W249824Monday, June 8, 1998Sunday, June 14, 1998
251998-W259825Monday, June 15, 1998Sunday, June 21, 1998
261998-W269826Monday, June 22, 1998Sunday, June 28, 1998
271998-W279827Monday, June 29, 1998Sunday, July 5, 1998
281998-W289828Monday, July 6, 1998Sunday, July 12, 1998
291998-W299829Monday, July 13, 1998Sunday, July 19, 1998
301998-W309830Monday, July 20, 1998Sunday, July 26, 1998
311998-W319831Monday, July 27, 1998Sunday, August 2, 1998
321998-W329832Monday, August 3, 1998Sunday, August 9, 1998
331998-W339833Monday, August 10, 1998Sunday, August 16, 1998
341998-W349834Monday, August 17, 1998Sunday, August 23, 1998
351998-W359835Monday, August 24, 1998Sunday, August 30, 1998
361998-W369836Monday, August 31, 1998Sunday, September 6, 1998
371998-W379837Monday, September 7, 1998Sunday, September 13, 1998
381998-W389838Monday, September 14, 1998Sunday, September 20, 1998
391998-W399839Monday, September 21, 1998Sunday, September 27, 1998
401998-W409840Monday, September 28, 1998Sunday, October 4, 1998
411998-W419841Monday, October 5, 1998Sunday, October 11, 1998
421998-W429842Monday, October 12, 1998Sunday, October 18, 1998
431998-W439843Monday, October 19, 1998Sunday, October 25, 1998
441998-W449844Monday, October 26, 1998Sunday, November 1, 1998
451998-W459845Monday, November 2, 1998Sunday, November 8, 1998
461998-W469846Monday, November 9, 1998Sunday, November 15, 1998
471998-W479847Monday, November 16, 1998Sunday, November 22, 1998
481998-W489848Monday, November 23, 1998Sunday, November 29, 1998
491998-W499849Monday, November 30, 1998Sunday, December 6, 1998
501998-W509850Monday, December 7, 1998Sunday, December 13, 1998
511998-W519851Monday, December 14, 1998Sunday, December 20, 1998
521998-W529852Monday, December 21, 1998Sunday, December 27, 1998
531998-W539853Monday, December 28, 1998Sunday, January 3, 1999

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