  We analyze the recently released CoGeNT data with a focus on their
time-dependent properties. Using various statistical techniques, we confirm the
presence of modulation in the data, and find a significant component at high
(E_{ee} > 1.5$ keVee) energies. We find that standard elastic WIMPs in a
Maxwellian halo do not provide a good description of the modulation. We
consider the possibility of non-standard halos, using halo independent
techniques, and find a good agreement with the DAMA modulation for Q_{Na}
\approx 0.3, but disfavoring interpretations with Q_{Na} = 0.5. The same
techniques indicate that CDMS-Ge should see an O(1) modulation, and XENON100
should have seen 10-30 events (based upon the modulation in the 1.5-3.1 keVee
range), unless L_{eff} is smaller than recent measurements. Models such as
inelastic dark matter provide a good fit to the modulation, but not the
spectrum. We note that tensions with XENON could be alleviated in such models
if the peak is dominantly in April, when XENON data are not available due to
noise.
