In addition, I figure people have tried to pinpoint his/their country of residence before by going over the Bitcointalk profile stats:
Assuming stats are true to reality (*), since the chart shows the data from a non-logged account (see
https://web.archive.org/web/20140420114108/https://bitcointalk.org/index.php?action=profile;u=3;sa=statPanel), the data shown should be in UTC. Id say sleep times are from 7 UTC to 12 UTC, which for an IT intensive person could fall in the range of 2AM-7AM roughly (give or take an hour). Mapping 7 UTC to 2 AM would place the physical location to be in the UTC-5 range, which is most likely to be USA or Canada (see
https://24timezones.com/timezone-map).
(*) I assume the stats are true, but they could have been altered (backoffice, on the Bitcointalk DB) at some point to throw people off course. The earliest snapshot Ive found is from April 2014, over three years after the last connection from the account).
Anyhow, pure speculation ...