NET
4 He displayed the riches of his royal glory and the splendor of his majestic greatness for a lengthy period of time—180 days, to be exact!
Darby
4 when he shewed the glorious wealth of his kingdom and the splendid magnificence of his grandeur many days, a hundred and eighty days.
KJV
4 When he shewed the riches of his glorious kingdom and the honour of his excellent majesty many days, [even] an hundred and fourscore days.