This is probably old news, but I found it the hard way, on a map.
Post 869 location is Canton Rd & Nelson Street, Hong Kong. Post 1680 location is Portland & Hamilton, Hong Kong (photo taken prior to Jan 2017). These two locations are within a few blocks of each other.
I believe Snowden (probably) is facing the camera on the sidewalk at the right edge of the street photo in 1680. Assuming he was staying at Canton & Nelson, he was close to home.
Forgot to include that 869 was taken from the Langham Place Building, if that matters.