'===========================================================================
' Subject: LEAP YEAR ALGORITHM UPDATE        Date: 03-09-99 (19:05)       
' Author:  Nigel Traves                      Code: QB, QBasic, PDS        
' Origin:  tarot@ihalliwell.freeserve.co.u Packet: DATETIME.ABC
'===========================================================================
'Some time ago I submitted a set of routines that were inspired by
'similar ones that are part of ansi C.  Unfortunately the algorithm
'that I found for determining if a year was in fact a leap year was
'wrong and meant that overall the package would not be Y2K compliant
'(the dreaded millennium bug strikes again!).  Having now got the
'correct algorithm for determining leap years I have produced this
'update.  Serendipitously (oooo, big woid - just means happy accident),
'leap year determination was limited to a single SUB, so all that needs
'doing is to replace the existing SUB with the one below.
'
'                          N. Traves 3/1999

SUB ThisInstant ( Now AS When )
    GetDate Now.Year, Now.Month, Now.MonthDay, Now.WeekDay
    Now.IsLeapYear = FALSE%
    IF (Now.Year MOD 400) = 0 THEN
        Now.IsLeapYear = TRUE%
    ELSEIF ((Now.Year MOD 4) = 0) AND ((Now.Year MOD 100) <> 0) THEN
        Now.IsLeapYear = TRUE%
    END IF
    DayOfYear Now.Month, Now.MonthDay, Now.IsLeapYear, Now.YearDay
    WeekOfYear Now.YearDay, Now.YearWeek
    GetTime Now.Hour, Now.Minute, Now.Second
END SUB