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StrayCats, the catalog of NuSTAR stray light observations, contains data frombright X-ray sources that fall within crowded source regions. Theseobservations offer unique additional data with which to monitor sources likeX-ray binaries that show variable timing behavior. In this work, we present atiming analysis of stray light data of the high mass X-ray binary SMC X-1, thefirst scientific analysis of a single source from the StrayCats project. Wedescribe the process of screening stray light data for scientific analysis,verify the orbital ephemeris, and create both time and energy resolved pulseprofiles. We find that the orbital ephemeris of SMC X-1 is unchanged andconfirm a long-term spin up rate of $\dot{\nu}=(2.52\pm0.03)\times10^{-11}$ Hzs$^{-1}$. We also note that the shape of SMC X-1's pulse profile, whileremaining double-peaked, varies significantly with time and only slightly withenergy.

Extending the baseline for SMC X-1's spin and orbital behavior with NuSTAR stray light