Mark 'rizzn' Hopkins is likely to sleep between 12 a.m. and 6 a.m..
Mark 'rizzn' Hopkins - Founding Editor for The SiliconANGLE Network and the purveyor of fine content at http://rizzn.com.
Mark 'rizzn' Hopkins is located in 75006 (Central Time (US & Canada) time zone). If the sleeping schedule doesn't appear right, maybe @rizzn hasn't specified the correct timezone in their Twitter profile.
Use the search box to know the sleeping schedule of another Twitter user.