Advertisement
this irregularity.
(or
fictitious
or
a
mean
uniform
at
a
rate.
The
real sun
sun.
few minutes.
by a
civil
called
time) cannot
on
the sun,
but is
It
mean sun.
ard time
system,
meridian
time
a
The
section
(2)
into five standard time
ground.
near
the
solar time
the menn
center (such as point A, figure 5).
all
through
clocks
it
is
when
precisely noon
though the
mean
from
11:30 o'clock
Changing
from
e.
in
changing the time piece
step
apparent
time
standard time
If
cality.
the
are the
same.
of
number
degrees
of
west
the nearest time meridian.
wide and represents
grees
longitude represents
standard time.
to
add the correction,
Equation of
/.
irregular
apparent travel around the earth
its
minutes ahead or behind the
uniform
of
rate
angular
incide.
The
at
any time
suns
is
expressed in minutes
measure of how
MAINTENANCE MANUAL
in
order
So,
sun is assumed
solar
Mean
is
either ahead
For
this
reason, mean
directly
be
measure
a
is
for
time
noon
a
fictitious
when
the
figure 5).
(see
of
the earth's surface
zones,
Each of
these zones
of
the meridian which passes through
the zone
by mean
solar
at
time
12:30 o'clock.
to
Standard,
time),
is
(sun
of
the zone to
locality is
the time meridian, the two times
on
If
it
is
the time must
not,
in
longitude that the
one
minutes of time correction
4
If
locality
the
if
west, subtract
—
As
was stated before, the real sun
Time.
Four
travel.
difference
is
referred to
of
time.
the real sun
ranch
get days
to
revolve around the earth
to
is
time
time
based on
of
or behind the
solar
determined by observation
of
time
based
according
zone
sun
mean
in
figure
represented by
uses
as
Thus,
indicate
(a)
(b)
to
solar time at point
points
and
(a)
Solar
Mean
to
from
local watch time to local
change the time
to
solar
the
mean
be
locality
As
time
a
hour of time,
of
lies
east
it.
fictitious
mean
year the
times
a
the positions
between
the "equation of time", and
as
The equation
is
ahead or behind the
10
of
equal length,
this
mean
sun
mean
time (sometimes
fictitious
the
on
the stand
to
is directly
over
is
divided
5
dotted lines
the
its
standard time,
for
example, the
o'clock,
12
A, nl:
may range
(b)
—
Time.
The next
from
the
for
time
the lo
for
corrected
the
lies
east
is
de
zone
15
each degree
applied
to be
the time meridian
is
few
either
a
sun which has
two
suns
of
the two
is
of
time
mean
its
or
of
in
a
co
a
Advertisement
