Wasn't that long ago. Just five years ago.
5-year gaps, as in this case, are common, but they do occur. The last time it happened in relation to Christmas on Wednesday was in 1996 (the prior having been 1991). Previously was 1968.
The 5-year gap comes about when we have had TWO leap years, e.g., 1996 & 2000. In each case we LEAPT over a day (which is why we call it a Leap Year, i.e., because we leap over a day, in the calendar). Because of the two leap years, the gap was only 5-days. Then, between 2000 and 2006 there was only ONE leap year. So we only leapt over one-day. The gap was thus 6.
6-year gaps are common. The cycle as to when the same date falls on a given day (e.g., Monday) goes in 6-5-6-11 cycle. This 6-5-6-11 cycle has all to do with leap years.
The next time Christmas will be on a Wednesday is indeed 6 years from now -- on 2030.
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