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Re: τα μέσα, τα μισά
by Greg Brush - Tuesday, 9 February 2010, 04:32 PM
  Actually, the correct way uses τα μέσα:
τα μέσα (του) Ιουλίου = the middle of July
προς τα μέσα (του) Ιουλίου = towards the middle of July

Similarly in expressions such as:
τα μέσα της δεκαετίας του ΄90 [ενενήντα] = the middle of the '90's decade (i.e., of the 1990's)
τα μέσα του 20ου [εικοστού] αιώνα = the middle of the 20th Century

While it's conceivable that you might sometime hear someone use τα μισά, this is definitely not the norm.

Greg Brush