Not Actually A Week

A jump in Traveller takes a week.

That's canon, and immutable.

But it doesn't...

A jump is 168 hours ± 10% and it's random.

So it's really 151.2 hours (6 days, 7 hours, 12 minutes) to 184.8 hours (7 days, 16 hours, 48 minutes).

That's a range of 33.6 hours (1 day, 9 hours, 36 minutes) where the piloting, navigation and engineering spaces must be manned.

It also creates an interesting bit of color in the universe when you start counting the hours.

A Type A or B spaceport will be 24/7 operations, but C and D ports will likely have hours.  Tracking the time means the players will have to deal with extra complications in scheduling.

It makes things seem more real.

Going off the GURPS and Traveller reservations I devised a system of 3d8 to generate the time differential.

3 = -10% 151.2 hours - 6 days, 7 hours, 12 minutes
4 = -9% 152.88 hours - 6 days, 8 hours, 52.8 minutes
5 = -8% 154.56 hours - 6 days, 10 hours, 33.6 minutes
6 = -7% 156.24 hours - 6 days, 12 hours, 14.4 minutes
7 = -6% 157.92 hours - 6 days, 13 hours, 55.2 minutes
8 = -5% 159.6 hours - 6 days, 15 hours, 36 minutes
9 = -4% 161.28 hours - 6 days, 17 hours, 16.8 minutes
10 = -3% 162.96 hours - 6 days, 18 hours, 57.6 minutes
11 = -2% 164.64 hours - 6 days, 20 hours, 38.4 minutes
12 = -1% 166.32 hours - 6 days, 22 hours, 19.2 minutes
13-14 = 0% 168 hours - 7 days
15 = +1% 169.68 hours - 7 days, 1 hour, 40.8 minutes
16 = +2% 171.36 hours - 7 days, 3 hours, 21.6 minutes
17 = +3% 173.04 hours - 7 days, 5 hours, 2.4 minutes
18 = +4% 174.72 hours - 7 days, 6 hours, 43.2 minutes
19 = +5% 176.4 hours - 7 days, 8 hours, 21 minutes
20 = +6% 178.08 hours - 7 days, 10 hours, 1.8 minutes
21 = +7% 179.76 hours - 7 days, 11 hours, 42.6 minutes
22 = +8% 181.44 hours - 7 days, 13 hours, 23.4 minutes
23 = +9% 183.12 hours - 7 days, 15 hours, 4.2 minutes
24 = +10% 184.8 hours - 7 days, 16 hours, 48 minutes