I´m a bit confused about pressure points (in a martial way) Is it possible to use the same points during the different times of the day or do you have to use one or more points for a different time of the day?
I would also like to hear that how the points exactly work when striked or pressed,I already know that chi moves to the area you want when you push them in a friendly manner,but what happens when it comes to martial way?
(Man, I haven’t thought about that game in years! 
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As far as the martial applications of point striking go, you do not have to hit specific points at only certain times of the day. All the points will work if you do it right at any time of day you strike them. The time tables have to do with healing mostly, and you should pretty much forget about them for martial application. That whole thing about the time tables was perpetuated by people who didn’t know what it was about.
Supposedly, striking certain points makes the qi focus there, which leaves certain other areas of the body vulnerable to a strike. Neiguan (Pericardium 6), on the inside of the wrist, is one such point, and one of the ones used the most. Striking this point while, for instance, blocking, makes certain other points vulnerable, such as Renying (Stomach 9), which is on the neck. Stomach 9 is quite vulnerable by itself, as you can KO someone or even kill them if you hit it hard enough, but supposedly, Neiguan makes the strike more dangerous.
Since the same points are used for healing as the ones used for fighting, which are kind of opposites, then at a basic level you can deduce that many of the points, when struck, will have the opposite effect to what the healing effect is. Not all points are like this, though, and the subject gets much deeper.
If you want some really in-depth information, you could check out Erle Montaigue’s Encyclopedia of Dim-Mak, which goes into a lot of detail, including methods to access the points, the correct directions the strike should follow, how to use the points for healing, etc. You name it, it’s probably in there. His website at http://www.taijiworld.com has a lot of free information on it, including several entire books that you can download.
I am working on dim-mak charts on my website with brief description of the points damage, but be aware that you must either know how to fight already before bothering with the points, or have someone make you aware of them while builing your foundation of movement, you should never have to really try to hit the point. The point strikes need to lie in the movement itself, and the movement should be done on reaction in the way of no mind. Thinking of pressure points to early on can make this process more difficult.
Regards,
Gary
“Of course thats just my opinion, I could be wrong”-Dennis Miller
www.pressurepointfighting.com
Gary is correct (Did I just say that Gary is correct 
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Learn to hit hard anywhere, than focus on points. CMA are usually taught from the general to the specific.