Chronometer.online
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No password — enter an email address and a one-time link to the instrument will be sent there. The link works once, and for twenty minutes.
Chronometer is a biwheel and orrery of transits against your natal chart, driven by a temporal throttle that travels from 1900 to 2100 and well past both. Cast a chart, move the wheel to any moment, and ask the Oracle — an interpreter, not a fortune-teller — what the geometry of that moment holds.
Built and run by two co-directors under the Time Travellers Guild. Access is by invitation-free sign-in while the instrument is in its early days, so we can keep an eye on how it's used and hear from the people using it.
Terms of service are still being written and will appear here before the instrument opens more widely. In the meantime: this is an early, evolving instrument, offered as-is, for reflection rather than instruction — see the note under the Oracle's replies once you're inside.