When McGarrett arrives at his office, its daylight. When the young boy finishes cleaning the windshield a few minutes later, it's already dark. When McGarrett goes into his office, it's daylight again. When everyone leaves the party, it's dark again.
When McGarrett puts his clothes on in the hospital, his suit appears to have survived the bomb explosion intact and without being wrinkled.
The governor jokes that, since there are two birth dates - a year apart - in McGarret's various records, they combined the numbers to put candles on McGarret's birthday cake. McGarret points and says there are 70 candles. No two birth years, a year apart, could generate an even number (e.g., 34+35=69, 35+36=71).
In "A Bullet For McGarrett" ,Steve was shot in the chest but in ""Blind Tiger" ,when he takes his hospital shirt off,we see no visible sign of the wound or a even a scar.
When McGarrett, supposedly blind, selects a shirt from the closet he picks without hesitation the white one correct for his suit although there are shirts of different colors hanging there.