The headers work like this:
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Example: 1/2007 for first week of the year 2007 (always UTC)

Dr. McCoy: [of John Christopher But maybe he could be retrained, reeducated.
Captain Kirk: Now you're sounding like Spock.
Dr. McCoy: If you're going to get nasty, I'm going to leave.
— Captain Kirk and Dr. McCoy, Tomorrow is Yesterday, Star Trek: The Original Series

Captain Kirk: [Happy to see no Tribbles in his command chair] I don't see any Tribbles around here.
Dr. McCoy: And you won't find a Tribble on this entire ship, Jim.
Captain Kirk: Bones, how'd you do that?
Dr. McCoy: Well, I cannot take credit for another man's work. Scotty did it.
Captain Kirk: Scotty! Where are the tribbles?
Scotty: Oh, uh, Captain, it was really Mr. Spock's recommendation.
Captain Kirk: Of course. Spock?
Spock: Based on computer analysis, of course, taking into account the possibilities of...
Captain Kirk: Gentlemen, I don't want to interrupt this mutual admiration society, but I'd like to know where the tribbles are.
Dr. McCoy: Tell him, Spock.
Spock: Well, it was Mr. Scott who performed the actual engineering.
Captain Kirk: Mr. Scott. [Articulately] Where are the tribbles?
Scotty: I used the transporter, Captain.
Captain Kirk: [Confused] You used the transporter?
Scotty: Aye.
Captain Kirk: Well, where did you transport them?
[Scotty looks around, and then everybody else looks elsewhere...]
Captain Kirk: Scott, you didn't transport them into space, did you?
Scotty: Captain Kirk, that'd be inhuman.
Captain Kirk: Well, where are they?
Scotty: I gave them a very good home, sir.
Captain Kirk: [Furious] Where?!
Scotty: I gave them to the Klingons, sir.
Captain Kirk: [Incrediously] You gave them to the Klingons?!
Scotty: Aye, sir. Before they went into warp, I transported the whole kit and caboodle into their engine room, where they'll be no tribble at all.
— Captain Kirk, Spock, Scotty, and Dr. McCoy, The Trouble With Tribbles, Star Trek: The Original Series

James T. Kirk: [uncertainly] My friend is obviously Chinese. I see you've noticed the ears. They're actually easy to explain.
Spock: [quietly to Kirk] Perhaps the unfortunate accident I had as a child.
James T. Kirk: [uncertainly] ...The unfortunate accident he had as a child. He caught his head in a mechanical... rice... picker.
— Captain Kirk and Spock being interrogated after being caught by a police officer for stealing clothes in The City on the Edge of Forever, Star Trek: The Original Series

Interrogator: Ok, let's take it from the top.
Pavel Chekov: The top of what?
Interrogator: Name.
Chekov: My name?
Interrogator: [sarcastically] No, my name!
Chekov: I do not know your name.
Interrogator:You play games with me mister, and you're through!
Chekov: I am? May I go now?
— Pavel Chekov being interrogated aboard the aircraft carrier USS Enterprise, Star Trek IV: The Voyage Home

Kirk: Now, Mr. Spock, there's really something about all this that I don't understand, so maybe you could explain it to me, logically of course... Now, when you jettisoned the fuel, and ignited it, you knew that there was virtually no chance of it being seen and yet you did it anyway. Now that seems to me like an act of desperation.
Spock: Quite correct, Captain.
Kirk: Now we all know, and I'm sure the doctor would agree with me, that desperation is a highly emotional state of mind. So how does your well known logic explain that?
Spock: Quite simply, Captain, I examined the problem from all angles, and it was plainly hopeless. Logic informed me that, under the circumstances, the only possible action would have to be one of desperation. Logical decision, logically arrived at.
Kirk: Ah, I see. You mean you reasoned that it was time for an emotional outburst.
Spock: Well, I wouldn't put it in exactly those terms, Captain, but those are essentially the facts.
Kirk: [sighs] You aren't going to admit that for the first time in your life, you committed a purely human, emotional act?
Spock: No, sir.
Kirk: [laughs] Mr. Spock, you are a stubborn man.
Spock: Yes, sir.
Captain Kirk and Spock, The Galileo Seven, Star Trek: The Original Series

Montgomery Scott: Well... well, the Klingons, uh... is this off the record?
James T. Kirk: No, this is not off the record.
Montgomery Scott: Well, Captain, the... Klingons called you a... a tin-plated, overbearing, swaggering dictator with delusions of godhood.
James T. Kirk: Is that all?
Montgomery Scott: No, sir, they also compared you with a Denebian Slime-Devil.
James T. Kirk: I see.
Montgomery Scott: And then they said that you were...
James T. Kirk: [Upset] I get the picture, Scotty.
Montgomery Scott: Yes, sir.
James T. Kirk: And after they said all this, that's when you hit the Klingons?
Montgomery Scott: No, sir.
James T. Kirk: [Confused] No?
Montgomery Scott: No, uh, I didn't. You told us to avoid trouble.
James T. Kirk: Oh, Yes.
Montgomery Scott: But I didn't see that it was worth fighting about. After all, we're big enough to take a few insults. Aren't we?
James T. Kirk: [Even more confused] What was it they said that started the fight?
Montgomery Scott: They called the Enterprise a garbage scow! Sir.
James T. Kirk: I see. And... that's when you hit the Klingon.
Montgomery Scott: [Obviously proud of himself] Yes, sir.
James T. Kirk: You hit the Klingons because they insulted the Enterprise, not because they...
Montgomery Scott: Well, sir, this was a matter of pride.
James T. Kirk: All right, Scotty. Dismissed. Oh... Scotty, you're restricted to quarters until further notice.
Montgomery Scott: Yes, sir. [Perks up] Thank you, sir. That'll give me a chance to catch up on my technical journals.
Montgomery "Scotty" Scott and James T. Kirk, The Trouble with Tribbles, Star Trek: The Original Series