Last year, Brian, one of the two founders, was thirteen days away from defending his doctoral thesis in chemistry at the Scripps Research Institute, in La Jolla, when his adviser discovered that he was planning to leave academia and start a biotech company.

NEWYORKER: No Death, No Taxes

In some cases, the bidding period was truncated from five days to thirteen hours.

NEWYORKER: Boss Rail

This successful docking of the Tiangong-1 was merely the first step toward habitation: the Shenzhou 9 crew have boarded the module and will be living on board for thirteen days.

FORBES: China's First Manned Docking of Space Module Is a Success...and a First Step

Thirteen Palestinian civilians have been killed in air strikes in Gaza in the last ten days.

NPR: Israel Apologizes, but Strikes to Continue

As Long Island residents try to cope with the aftermath of Hurricane Sandy, many are upset and angry over the way Long Island Power Authority (LIPA) handled the restoration of power around their neighborhoods especially those who continue to be without power thirteen days later.

FORBES: Connect

The rules also permitted him to have a radio after thirty days, and, after sixty days, a thirteen-inch black-and-white television.

NEWYORKER: Hellhole