In article , Steve Willner
writes:

Are any of the detectors located in the tropics where there might be a
slight daily modulation from the gravitational focussing effect of the
WIMP particles as they pass through the Earth?

Wouldn't the major component of motion be the Sun's orbit around the
Milky Way center?

Of the motion, yes, but the timescale is too long to notice any
modulation.