Excerpt from the author's foreword:This is a book about an equation about a single equation
and its two thousand years of history. The topics presented in the chapters of this book are
scattered throughout a wide variety of literature so this book is merely an attempt to combine
pieces of content which together form a historical and astronomical concept which we today call
the equation of time. Unlike many professional books written by experts with solid knowledge in
certain fields of expertise this book is a scrapbook of records that I compiled when I studied
the history and theory of the equation of time. I hope this fact does not reduce the useful
value of the book. ...The reader will be able to learn about the history of the equation of
time be acquainted with its calculation but will also be able to study more demanding cases
of calculating the equation of time which are useful for astronomic purposes. Sundial
enthusiasts will also find in the book the expressions for the graphic design of sundials and
analemmic curves. If I manage to pique the interest of the reader to the extent that they
engage in practical applications of the material presented for example designing sundials my
purpose is achieved and the effort entirely worthwhile.
