This depends on the factory;s capability and labour force. With standard labour force it may take more than a month. With a large labour force it may take at least 3 weeks.
Nobody really knows because the black bird wasn't ment to travel.
In 1990 the SR-71 went from the West Coast to the East Coast in 68 minutes and 17 seconds. That's as close as I could get to Los Angeles to New York.
It depends where from
10 - 19 days
how long does it take to build a asimo
how long did it take to build the half moon
how long did it take to build the scottish parliment?
how long did it take to build cabot tower
Less than 50 minutes but not much.
hs2 will take 15 years to build
how long does it take to build a beam bridge of 2400 sq ft
it took 3 years