David Jacobs is likely to sleep between 1 a.m. and 7 a.m.
David Jacobs - https://twitter.com/#!/djacobs/status/27234635781
David Jacobs is located in iPhone: 40.788668,-73.969816 (Eastern Time (US & Canada) time zone). If the sleeping schedule doesn't appear right, maybe @djacobs hasn't specified the correct timezone in their Twitter profile.
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