The web logs for this site tell us that people have been asking search engines questions like “when is pancake day” or “pancake day 2003 UK” and ending up on a page of pancake pictures from last year. Not very helpful. So, for those of your searching for this information….This year, pancake day is Tuesday 4th March (2003).
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Pancake day is always the day before Ash Wednesday. Ash Wednesday is 40 days before Easter. And you can work out the date for Easter with some maths (including C source code. Woohoo).