If, by "Expired", you mean "Not Dropped", as in "Redemption Period, etc.", then its roughly about 75 days from the expiration date.
If, by "Expired", you mean "Dropped", then it should either be available for registration or may have been picked up by a drop-catching service like eNom, who, ironically, today snatched "identifying.net" before I could get it.
I found this out by running a WHOIS search on the domain after it showed as "Already Taken".
There are some more experienced people in this forum who might could better answer this question.
Hope this helps.
rxmr