If you rent a movie on iTunes how long are able to keep it?

From http://support.apple.com/kb/HT1415 :

• You have 30 days to begin watching the movie after the download completes. You can start watching the movie rental while it is still downloading.
• Once you've started to watch the rental, you have 24 hours to finish watching the movie (even if you start watching before the download is complete). You can watch the rental as many times as you want within this 24-hour period.
• The rental will expire when either the 30 day or 24-hour limit is reached. Once the rental expires, the rental is automatically deleted. You must rent and download the movie again to view it after your rental has expired.

If you are not in the US then it may be 48 hours instead of 24