Philadelphia, PA – September 15, 2017 – Stratus Rooftop Lounge, located on the 11th floor of the Kimpton Hotel Monaco (433 Chestnut St.) in Old City Philadelphia, is saying farewell to summer and welcoming the autumn equinox with its inaugural Sunset Soirée on Friday, September 15. The evening will be divided into a VIP party from 6 – 8 PM and a General Admission open bar from 9 – 2 AM.