From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=0.2 required=5.0 tests=BAYES_00,INVALID_MSGID, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f7be1,be6b7e036aa9236c X-Google-Attributes: gidf7be1,public X-Google-Thread: 11390f,be6b7e036aa9236c X-Google-Attributes: gid11390f,public X-Google-Thread: 103376,be6b7e036aa9236c X-Google-Attributes: gid103376,public X-Google-Thread: fa0ae,be6b7e036aa9236c X-Google-Attributes: gidfa0ae,public X-Google-Thread: 1014db,be6b7e036aa9236c X-Google-Attributes: gid1014db,public X-Google-Thread: 1094ba,be6b7e036aa9236c X-Google-Attributes: gid1094ba,public X-Google-Thread: 1164ba,be6b7e036aa9236c X-Google-Attributes: gid1164ba,public X-Google-Thread: 101deb,be6b7e036aa9236c X-Google-Attributes: gid101deb,public From: "Norman H. Cohen" Subject: Re: language wars (results 13 September) last posting Date: 1996/09/19 Message-ID: <32417D16.5D5@watson.ibm.com>#1/1 X-Deja-AN: 183980514 distribution: inet references: <51bv60$8d@pheidippides.axion.bt.co.uk> content-type: text/plain; charset=us-ascii organization: IBM Thomas J. Watson Research Center mime-version: 1.0 reply-to: ncohen@watson.ibm.com newsgroups: comp.lang.ada,comp.lang.apl,comp.lang.basic,comp.lang.c,comp.lang.fortran,comp.lang.perl.misc,comp.lang.pl1,comp.lang.rexx,comp.lang.pascal.misc,comp.lang.smalltalk x-mailer: Mozilla 3.0 (Win95; I) Date: 1996-09-19T00:00:00+00:00 List-Id: Andrew Gierth wrote: > Norman> In any 2800-year cycle, the 13th will come out on each day of > Norman> the week the same number of times. In fact, this is true of > Norman> any 28-year cycle that does not include a century year that > Norman> is not a leap year (e.g. 1800, 1900, 2100, 2200). > > You have missed, however, the fact that the calendar repeats every *400* > years, not every 2800. 400 years is 146097 days, which is 20871 weeks > precisely. My goodness, your're right! My apologies. -- Norman H. Cohen mailto:ncohen@watson.ibm.com http://www.research.ibm.com/people/n/ncohen/