QUOTE from The Watchtower :
The “last days” contain their own unique grouping of marks, or events, forming a positive “fingerprint” that cannot belong to any other time period.
When the many factors are put together, we find that our generation, our day is the one that is identified in the Bible as the “last days.” In fact, in this year 1967 we are actually living in the final part of that time! This can be compared to, not just the last day of a week, but, rather, the last part of that last day.