- In the United States of America, Tax Day is the due date for individual income tax returns.
- A "number cruncher" is an accountant who works with numerical data, which could be why this Mega-Invasion involves Number Crunchers.
- Strangely, this Mega-Invasion does not appear in the "Events" page of the Shticker Book.
- Despite Tax Day being postponed by three months in 2020, the Mega-Invasion still occurred on April 15th.
- Tax Day on Wikipedia
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