Black Natural Versatile Plastic
Leap Day Calculator
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$184.23
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Product Description
Leap Day happens every 4 years - except years like 2100 and 2200 which are divisible by 400. Single -Two part device with rotating outer ring to calculate the day of the week for leap days up to year 2096.
Details
What's in the box:
Leap Day Calculator
Dimensions:
Success Rate:
First To try.
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Rating:
Mature audiences only.
