the.com/tidal
Of the ocean's twice-daily reminder that the moon is in charge.
means Relating to the rise and fall of sea levels caused by the gravitational pull of the moon and sun.
from From tide, the Old English tid meaning a span of time or season — back when the sea's rhythm was literally how people kept the hours.
Moon's gripLunar gravity outpulls the sun's by roughly double.
Land tidesThe ground itself rises about a foot daily.
Tidal lockingWhy the moon shows Earth one face forever.