time/date limit in query

[rake]

$cut = time() - 60*60*X*Y;
where X is the number of hours and Y is the number of days.. You're basically counting the number of seconds (60 seconds * 60 minutes * X hours * Y days) and subsctracting from the current time so you get a date in the past..

then you'd add a condition to your query: AND thread.dateline > $cut