|
Lockyer defines the following variants of observation situations:
|
location
of star |
time of
observation |
relation to
sun |
definition |
|
rising
(eastern horizon) |
morning |
true /
cosmic |
sun rising
too |
|
apparent /
heliacal |
sun will
soon be up |
|
evening |
true /
achronic |
sun setting
too |
|
apparent /
heliacal |
sun has just
gone down |
|
setting
(western horizon) |
evening |
true /
cosmic |
sun setting
too |
|
apparent /
heliacal |
sun has just
gone down |
|
morning |
true /
achronic |
sun rising
too |
|
apparent /
heliacal |
sun will
soon be up |
|