According to Fleet Tactics (yes, I decided to take it as canon), it takes the Winterrowd 086 - 068 = 18 days to travel from 7th Fleet territory to Perry.

We can guess a starting location for the Winterrowd by looking at where other 7th fleet events are reported from: 7th fleet does NOT include the Armageddon, as she's stationed at Proxima Centauri; nor The TCS Eisenhower or Kennedy as these are probably at Sol; nor the Concordia or the Coral Sea, which are part of the 14th Fleet at Enigma. And the Valiant is sent together with the Winterrowd.

This leaves the Quinson, Bradshaw, Kinney, Roosvelt, Liberty, Hermes, Invincible and Illustrious.

Wonder Chicken says:

Paranoid by Kilrathi raids and fearing another attack on the inner homeworlds, the civilian government refused to deploy the Third Fleet’s five major carriers to the front. The TCS Armageddon, Saratoga, Eisenhower, Kennedy, and the Lincoln stayed behind to defend Earth under direct Presidential order as the core to the newly christened “Terran Defense Fleet”.

So, it seems we haven't missed any. But we only hear again of:

• TCS Illustrous destroyed by new Kat bomber at Aloysius
• TCS Roosvelt - shot down at Munro
• TCS Invincible - victory in Morpheus

But! Notice that Ludmilla Petranova leaves Proxima for Hell's Kitchen 8 days after the Winterrowd and Valiant depart for Gemini. Was the kat raid there due to the vacuum left by either ship? It would seem so: Hell's Kitchen is about half way between Munro and Morpheus. We later hear about losing ground at Port Hedland, Chang-Du, and Gimle. Hell's Kitchen is pretty much in the middle, so I'll measure distance to Perry by counting jumps from Hell's Kitchen.

So we go, Enyo, Krieger, Luyten, Weslyn, Mastif, Oxford, Saxtogue, New Detroit, Perry. Nine jumps in 18 days. Now, too bad, we don't know the class of the Winterrowd nor Valiant, but if we assume a speed of 125 as typical for carriers, a Centurion's cruising speed is 4 times that, so, for the purposes of estimating Privateer's plotline dates, we'll use a rule of thumb: 2 jumps per standard day. And we will work backwards, since the first part of the game is devoted to trading and upgrading the ship.

For the second part, Righteous Fire, we'll work forwards, since the game can be completed without additional trading or taking of non-plot, paid missions.

Note that the Centurion's cruising speed being the same as the Excalibur's, 500 kps, our analysis of the WC3 timeline agrees EXACTLY.

Check it out: Time analysis based on WC3.