Tom Kalbfus
Mongoose
This is a Time Travel Map for Traveller, a bit of explanation is in order.
The maps are treated just like maps of space, this one shows two subsectors of time, the number at the top of each hex is the date, the red number at the bottom of the hex is the address, as you can see the address is a 6-digit number, which means there is 1 million addresses. The addresses are cells to a giant solar powered computer in the shape of a ring around the Sun. The only hexes which can be reached reached by the time drive are those that have circles with blue fill in the center, that means a whole planet Earth and Solar System at that date is being simulated by that particular cell in the computer, our own date, 2015 AD is included in this map. The Time Drive works just like a jump drive but with the following exceptions. The Time Drive only works when the Time Ship is resting on the surface of a large massive body in the Solar System, that is a Size 1 World or larger. The surface rested on must be solid in order to maintain a fixed position, otherwise a misjump occurs. A Time Jump can't be initiated when the ship is in orbit, it needs to stay with the worldline of a large body such as a moon, or a planet. Gas Giants are disqualified since they have no accessible solid surface to land on. Now a Jump 1 can jump 1 hex on this map, and Jump 2 can jump 2 hexes and so on, the standard fuel requirements per hex jumped applies as usual, the only difference is there is no time spent in jump space, the jump is instantaneous.
Now to explain what is beyond the edges of this map:
Below the bottom edge of this map are the continuation of the dates, each collumn in this map represents a century of dates with only about a third of them accessible by the time jump drive, the other hexes without circles in them can't be reached, The Time Jump Drive just fails to go their, and hexes that are available need to be within range of that particular time jump drive.
Beyond the right edge is another subsector of dates but around 1,000,000 years before present, more precisely it is the years 9,997,300 BC and later, by continuing to move right on this map, you enter more recent days until you get back to the absolute present which is in the years 2700 to 2799 AD.
Beyond the left edge is another pair of subsectors covering the years from 1 AD to 1100 AD.
Above the top edge, is another megayear approximately 2,000,000 BC to 1,000,000 BC. Each megayear band is 100 hexes wide, The years back to 1,000,000,000 BC are simulated in this Matrix. this isn't "real history" and the time travel mechanics is bogus, the Time Drive simply activates a back door in the simulation that allows the Time Ship to move from one simulated time period to another. All time in every address moves at the same rate forward in time. Who built the Matrix and the giant computer simulating it is a mystery, but the ringworld shaped Computer is orbiting a red giant at a radius of 40 AU, it is not known whether this red giant is the Future some or some other star.