Compatibility without a birth time
For a couple the time is unknown twice as often as for one person: it is enough that one of you does not know it. You can still order the book, some chapters will just be shorter.
What does not depend on the time
The Sun and the planets from Mercury to Pluto barely move in a day. The aspects between them, the composite of these planets and the couple’s matrix are calculated exactly without a time.
What does
The Ascendant and houses change every few minutes, and the Moon crosses a sign in two and a half days. Without a time there are no houses or house overlays, the Moon is known only by sign, and ashta-kuta is not calculated.
How we warn you
In the form you mark that the time is unknown. Then every chapter where it matters says plainly what is left out and why.