NuSTAR CALDB Release Version: 20200626 Release 20200626 includes a new release of the CLOCKFILE, v104 CLOCKFILE: ========== This is an update of the upgraded NuSTAR clock correction file. Details and comparisons to the previous clock correction file can be found here: http://www.srl.caltech.edu/NuSTAR_Public/NuSTAROperationSite/clockfile.php The clock correction file keeps the NuSTAR relative time (after barycentric corrections) accurate to better than 100 micros and accounts for drifts in the NuSTAR clock caused by temperature variations. This clockfile is compatible with the current version of barycorr. See the above link or the barycorr fhelp file for its usage.