Harrowsmith – September 2019

(singke) #1

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HOW TO READ OUR CHARTS


The times of events presented in this section are based
on the city of Ottawa. It is common for almanacs to be
centred on the capital of the country for which they are
designed. Purely celestial events happen at the same
absolute time across the country. Since Canada is such
a broad country, the time of celestial events must be
corrected for your time zone, whether west of Ottawa
(add hours) or east (subtract hours).

DETERMINING LOCAL
TIME FOR LOCAL EVENTS
Most celestial events listed in the
“notable events” column only need
correction for time zone difference
from eastern time (Ottawa).
However, the sun and moon times,
and events that reference the horizon
or meridian, will benefit from the
Ottawa Time Corrections table


because risings, settings and transits
depend on your difference in latitude
and longitude from Ottawa.
Once you make the time zone
correction from Ottawa’s eastern
time zone to your time zone, you
must then apply the Ottawa Time
Corrections table to get more
accurate local times. This corrects
for your longitude within your time
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