Celebrato nei paesi (+1):
Stati Uniti.National Buttercrunch Day negli altri anni
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| National Buttercrunch Day 2113 | |
| National Buttercrunch Day 2114 | |
| National Buttercrunch Day 2115 | |
| National Buttercrunch Day 2116 | |
| National Buttercrunch Day 2117 | |
| National Buttercrunch Day 2118 |