This article is from the Greece FAQ, by Nikolaos (Nick) C. Fotis, firstname.lastname@example.org with numerous contributions by others.
From: email@example.com (Panayotis Fouliras; TA PhD)
Subject: Re: Need Help finding SW stations!
Try (around midnight UTC) 9.395MHz and 9.420MHz.
Other frequencies (time is important) are 9.425MHz, 11.595MHz
and 11.645MHz (one of the last two is not the Voice of Greece,
but the Radio Station of Macedonia, from the city of
Thessaloniki, which simply relays the local program; can be
heard clearly in London after 1pm UTC).
[ Anyone who can add more? -- nfotis ]