If the Tardis is in the time vortex, there isn't a real encontro, data of birth. So I guess they would go with the encontro, data on the planet of origin of the parents the seguinte time they visit it (minus the time they spend inside the Tardis since the birth).
Well I guess if you are on a planet you would take the encontro, data not the year. Then you just gauge time spent on the TARDIS. I would think that no matter where you jump to or where you go in time that a dia is a dia and a ano is a year. If born IN the TARDIS...Well They have ways to find out the date. So ...What if they are born ON the TARDIS...Well now my brain is broke so I can not go on trying to answer!!!
posted over a year ago
Actually, since a dia is measured por how long the Earth takes to spin on its axis, and a ano por how long it takes to orbit the Sun, days and years will be different on different planets. For example, a ano on Mars is almost double the length of a ano on Earth.