Born in London

Latitude and longitude decide which sign was rising and where the house cusps fall. Longitude also fixes the local time the birth actually happened at — London sits in Europe/London, and getting that wrong shifts every angle in the chart.

Twinbat geocodes the birthplace and resolves its historical timezone, including the daylight-saving rules in force on the day you were born rather than the ones in force now. That distinction matters more often than people expect.

Sharing a birth city is the third of the four things that make a match rare — the others being the date, the year and the time. Together they are what separates a coincidence from a genuinely similar sky.

• Birthday Match — Same date and month, any year.
• Strong Birthday Match — Same date and month, with chart overlap.
• Time Twin — Same birthday, birth times within the tolerance.
• Place-Time Twin — Same birthday and time, same city of birth.
• Rare Twin — All of the above, evidenced.
• Deep Twin — Same date, year, time and place.

Your exact birthplace is private by default and never shown publicly. City-level information is only ever visible to people you have matched with, and only if you choose to share it. This page contains no user data of any kind.