Your Coordinates
You have a position in space and a position in time. Almost nothing is ever measured from there. Distances are given from the Sun, dates from the birth of an emperor, change from an arbitrary baseline year.
These tools move the origin. Your birth moment becomes the zero point — the instant the clock starts and the place the ruler is held against — and everything else is expressed as a distance from it.
Nothing here is a prediction and nothing is a horoscope. It is the same physics and the same public measurements everyone else uses, re-centred on the one point that is yours.
The birth sky chart is free to download — 300 dpi, ready for the printer. Make one
Five of them, all working. Each takes the same birth moment and measures something different from it.
How far your light has travelled, and which stars it has reached.
The moment you were born, light left Earth. It has been travelling ever since, one light-year every year. Watch that sphere expand in real time, see which stars now fall inside it, and count down to the next one it will reach.
The sky above that place at that moment, beside the sky now.
The stars that stood over your birthplace at your birth moment, drawn as a plate, next to the same patch of sky tonight. What has moved, and what has not.
The phase over your birthplace, and which way up it hung.
The fraction of the Moon that was lit on the night you were born, how far away it was, and — the part almost every version of this gets wrong — which way round it appeared from the hemisphere you were in.
How far you have travelled — and what you measured it against.
The Earth spins, orbits the Sun, and rides with the Sun around the galaxy. None of it stops. But there is no single answer to how far you have gone: it depends entirely on what you measure against, and the honest number changes by a factor of a thousand.
The line on the globe where the clock reads your birth time.
Somewhere on Earth it is your birth time right now. That line sweeps westward without stopping — this shows where it falls, and which places are living your moment.
Population, carbon, ice — measured from your first day.
Every published series has a value on the day you were born and a value today. This puts the two side by side, so the change is measured from your beginning rather than from a round-numbered year.