Florida ? Thunderstorms once again forced NASA to call off the launch of space shuttle Endeavour on Monday, the fifth delay for the space station construction mission.

NASA said it would try again early Wednesday evening, after taking a one-day break.

In a scene nearly identical to Sunday, launch managers halted the countdown just minutes before Endeavour and seven astronauts were supposed to blast off in the early evening.

This time, storms packed with lightning popped up on opposite sides of the launching site, one after the other, close enough to violate NASA’s safety rules.

Endeavour has been grounded for an entire month now, first by leaks, then storms.

“The weather has just bitten us again,” launch director Pete Nickolenko informed commander Mark Polansky and his crew aboard Endeavour. “So sorry about that.”

“We understand,” Polansky replied. “That’s the nature of our business, and like I said before, when the time is right, we’ll be here, we’ll be ready.”