Doomsday calculator memory

发行商 Joao Vianna AppTrack Ninja。

Test your hability to dates

In 1970, British mathematician John Conway devised a way to quickly calculate the weekday of any given date without the help of calculators, computers, or calendars. This app helps you to practice and memorize.

分类: Education, Entertainment

的 App Store 排名、截图、估算和类似应用。 Doomsday calculator memory.

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