  Dark matter (DM) particles captured by the Sun can produce high energy
electrons outside the Sun through annihilating into meta-stable mediators. The
corresponding cosmic-ray electron signals observed by the space-based
experiments will be time dependent due to the orbital motion of the space-based
detectors. The shape of this time dependence is predictable given the orbital
information of the detectors. Since the high-energy CR electron (with energy
E>100 GeV) fluxes are expected to be constant in time, non-observation of such
time variation can be used to place upper limits on the DM annihilation cross
section. We analyze the time dependence of dark matter cosmic-ray signals in
three space-based experiments: AMS-02, DAMPE and CALET. Under the assumption
that no time dependent signal is observed, we derive the 95% C.L. exclusion
limits on the signal strength from the current data. We map our limits onto the
parameter space of the dark photon model and find that the constraints are
comparable with that derived from the supernova SN1987A.
