how do you pray 5x/day-- if a day is only 90 minutes long?

From World in October, clarification from Malaysia's "Department of Islamic Development"...

A Muslim astronaut bound for the International Space Station won't have to wear out his space suit praying toward Mecca more than six dozen times a day, according to a religious authority in Malaysia. With day and night alternating every 90 minutes, the Quran would seem to require a Muslim in orbit to pray toward Mecca 80 times in 24 hours instead of the customary five times back on Earth.

Guidelines handed down by Malaysia's Department of Islamic Development provide that Sheikh Muszaphar Shukor—a Muslim astronaut to be launched into space from Russia in October—must only pray five times, but should make all attempts to take a prayerful posture while in space. "During the prayer ritual, if you can't stand up straight, you can hunch. If you can't stand, you can sit. If you can't sit, you should lie down," the ministry ruled.