cyclic time
    - spiral or helix
    blink
    breathe
    days
    month / lunar / menstrual
    seasons
    year / solar
    life
    civilizations
    ages
metaphors of time
    the circle of time
        emphasizes cyclic time
    the river of time
        more linear
    fan-shaped
    tree-shaped
        roots, trunk & branches
seasonal
    summer / winter
    wet / dry
    spring / summer / fall / winter
solar
    solstices
        mid-winter [shortest day]
        mid-summer [longest day]
    equinoxes - equal day & night
        vernal - spring
        autumnal - fall
    weather lags solar by 6 weeks
lunar
    lunar month - 29 1/2 days
    Metonic cycle - 19 year / 235 lunar months
    Callipic cycle - 4 Metonic cycles / 940 lunar months
    Hipparchic cycle - 4 Callipic cycles minus 1 day / 3760 lunar months
axial precession - 26,000 years
Joseph Campbell
    eternal
        outside time
        everlasting [a very long time] is not eternal
    time shuts out the eternal
    discrimination separating the eternal from the temporal
Alteringa - the dream time
    eternal
    ever-present