Release 201711204 NuSTAR CALDB Release Version: 20171204 Release Type: Clock Correction Update Summary of changes: CLOCK: An updated NuSTAR clock correction file, version 76, is available. This file is up to date through 2017-12-04, compared to 2017-10-02 in the previous version (75). The latest clock file is available from the SOC public website: http://www.srl.caltech.edu/NuSTAR_Public/NuSTAROperationSite/clockfile.php For the most part the residuals remain within +/- 2 ms. There is a gap in the clock correction values for 2017-11-21 to 22 (2881 to 2882 on x-axis of plot) due to Malindi ground station issues during four scheduled passes on those days. We performed two KSAT Singapore station contacts in this gap but we normally exclude data from non-Malindi contacts for clock correction fitting. The impact of this outage is being investigated.