Jan
Zuidhoek
Reconstructing Alexandrian Lunar Cycles
(on the basis of Espenak’s
Six Millennium Catalog of Phases of the
Moon)
This new book (2023-2026)
on Alexandrian Paschal reckoning (ISBN 9789090370446) is the successful
successor of the author’s first book (2019-2023) on
the same subject (ISBN 9789090324678). The most recent version (2026) of
this new book as well as the most recent version (2023) of its predecessor is
mainly available via the Dutch online bookstore Boekenbestellen:
Both these books can be ordered through https://www.boekenbestellen.nl.
The new book, as well as its
predecessor, explains, by following the mainstream of the history of computus (i.e. Paschal reckoning), developed from the early
third century onwards for determining (Julian or Alexandrian) calendar dates of
the Paschal full moon (and of Paschal Sunday), which stream shortly after AD
250 rose in Alexandria (Egypt) to ultimately in AD 1582 (turning point in
the history of chronology) flow into an astronomically more realistic method
for determining Gregorian calendar dates of Easter, how at the time in
Alexandria calendar dates of the Paschal full moon depended on phases of the
moon and how recently the three lost fundamental Metonic lunar cycles
constructed in Alexandria before the first council of Nicaea in AD 325 (turning
point in the history of Christianity) were reconstructed by the author of this
book on the basis of the Six Millennium Catalog of Phases of the Moon compiled by NASA’s
eclipse expert Fred Espenak. But unlike its predecessor, it contains the
implications of the Irish scientist Daniel Mc Carthy’s recent Its author
extraordinarily surprising discovery that the great Alexandrian computist
Anatolius must have sighted the new crescent moon at sunset on the evening of
21 March 269.
Its author, Jan Zuidhoek, is also the author of the four webpages Book and Author, Table of Contents, Summary,
and Six Alexandrian Metonic Lunar Cycles,
which are intended to inform you about the new book, as well as of the two
previously created (but steadily updated) webpages Dionysius Exiguus’ Paschal Table
and Christian Era and Universal Time.
© Jan Zuidhoek 2023‑2026
(updated 5-11-2026)