In the 'old' days there was a set pattern to the drops - a domain expired and there was a fixed time period in which the owner could renew (REDEMPTIONPERIOD), then the domain went into the PENDINGDELETE period of six days, then the domain was released back to the registry by the registrar for re-registration. They were all released at a set time, so it was possible to grab them within milliseconds of them dropping.
????: NamePros.com http://www.namepros.com/domain-newbies/262113-dropped-expired-i-dont-get-it.html
Today things are a lot more confused, with many registrars auctioning off expired domains via Pool, SnapNames and ClubDrop before they are released back to the registry.
However, some do follow the old process. The example you've given above seems a bit odd - I would expect the REDEMPTIONPERIOD to last 30 days from the 18 November (the UPDATED DATE), then it should change to PENDINGDELETE which will last 6 days, so I'd expect it to drop on the 24th December. I could be wrong though, as these days the whole process seems entirely dependent on what the registrar wants to do.