Celebrato nei paesi (+1):
Stati Uniti.National Buttercrunch Day negli altri anni
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| National Buttercrunch Day 2248 | |
| National Buttercrunch Day 2249 | |
| National Buttercrunch Day 2250 | |
| National Buttercrunch Day 2251 | |
| National Buttercrunch Day 2252 | |
| National Buttercrunch Day 2253 |