The leap year comes around once in four years.

闰年每四年来一次[每四年有一个闰年]。

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Which year were you born? Is it the leap year?

你出生在哪年，是闰年吗？

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The extra day in February because of the leap year also helped, specialists said.

专家表示，因今年是闰年，2月比往年多了1天，这也是有利因素之一。

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While final root cause analysis is in progress, this issue appears to be due to a time calculation that was incorrect for the leap year.

FORBES: Connect

This comes even though Apple reported 17.6% annual revenue growth, or 27% when factoring in that last year had an extra week to account for the leap year.

FORBES: Google vs. Apple: A Tale of Two Companies

The town calls itself the "Leap Year Capital of the World" and expects 100 or more people with Feb. 29 birthdays to attend its quadrennial Leap Year Day celebration, says Jerry Brown, a pastor and store manager there.

WSJ: For Some, All in a Leap Day's Work