anomalistic year
year
sidereal year
Permo-Carboniferous
Permian
heliosynchronous
Capitanian
Kungurian
Wuchiapingian
Changhsingian
Wordian
Sakmarian
Roadian
Asselian
Artinskian
earthlike
orbit
celestial orbit
circuit
deep time
Guadalupian
Zechstein
cryogenesis
sun
solar year
ephemeris time
astronomical year
terrestrial time
RTLT
diurnal motion
equinoctial year
TDT
round-trip light time
tropical year
terrestrial dynamical time
TT
regrede
pericystic
cone
Palaeophytic
orbit period
palaeogeochemistry
Copernican
solar calendar
perigee
-cene
K-T boundary
-zoic
peridermal
day
anomalistic month
paleogeodynamic
temporopontine
peridiolar
lose an hour of sleep
geocyclic
Permian-Triassic extinction
Great Dying
areosynchronous
pericondensed
Permian-Triassic mass extinction
revolvingly
annual aberration
mean anomaly
paleotectonic
periplast
Maastrichtian
semimeridian
peridermic
perigeal
Oberth effect
Universal Time
Quaternary
palaetiology
true anomaly
déblai
perihelial
Nectarian
non-periodic
periodic
solar
gyre
periosteoblastic
End-Permian Extinction
synodic period
Miocene
Paleozoic
Earthish
perigean
Earth day
Embrian