Right, so I can answer my own question. For everyone wondering how to get the Page Overlay results for a user defined period.
1) Open the Page Overlay for the page you want to inspect
2) The URI for the page overlay looks like:
3) You can change the period and date parameters right there in the browser address bar
4) The date parameter uses the format YYYY-MM-DD and this date is the STARTING date for the period parameter
5) The period parameter takes the values: day, week, month or year
Example:
This will show the page overlay for January 2014 (2014-01-01 through 2014-01-31).
Tip: when using period values of month and year you can even omit the day and month respectively. So this will work:
Tested on Piwik 2.9.0.
1) Open the Page Overlay for the page you want to inspect
2) The URI for the page overlay looks like:
http://piwik/index.php?module=Overlay&period=month&date=today&idSite=1#l=http$3A$2F$2Fdomain.tld$2F
3) You can change the period and date parameters right there in the browser address bar
4) The date parameter uses the format YYYY-MM-DD and this date is the STARTING date for the period parameter
5) The period parameter takes the values: day, week, month or year
Example:
http://piwik/index.php?module=Overlay&period=month&date=2014-01-01&idSite=1#l=http$3A$2F$2Fdomain.tld$2F
This will show the page overlay for January 2014 (2014-01-01 through 2014-01-31).
Tip: when using period values of month and year you can even omit the day and month respectively. So this will work:
http://piwik/index.php?module=Overlay&period=year&date=2014&idSite=1#l=http$3A$2F$2Fdomain.tld$2F
Tested on Piwik 2.9.0.