1&#x2F;365 I&#x27;d think. There are 365 days in a year and it has to match exactly one day. You might be interested in the Birthday Paradox though <a href="http:&#x2F;&#x2F;betterexplained.com&#x2F;articles&#x2F;understanding-the-birthday-paradox&#x2F;" rel="nofollow">http:&#x2F;&#x2F;betterexplained.com&#x2F;articles&#x2F;understanding-the-birthd...</a>