Celebrato nei paesi (+1):
Stati Uniti.National Buttercrunch Day negli altri anni
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| National Buttercrunch Day 2207 | |
| National Buttercrunch Day 2208 | |
| National Buttercrunch Day 2209 | |
| National Buttercrunch Day 2210 | |
| National Buttercrunch Day 2211 | |
| National Buttercrunch Day 2212 |