NuSTAR CALDB Release Version: 20180312 Release Type: Clock Correction Update Summary of changes: CLOCK: An updated NuSTAR clock correction file, version 79, is available. This file is up to date through 2018-03-12, compared to 2018-01-26 in the previous version (78). The latest clock file is available from the SOC public website: http://www.srl.caltech.edu/NuSTAR_Public/NuSTAROperationSite/clockfile.php The residuals remain within +/- 2 ms however there is a gap in the data from the Malindi station between 2018:037 0018Z to 2018:039 1611Z **, lost due to groundstation power supply issues. This potentially impacts detailed timing analysis for the following observations ;sequenceID Target Survey Start_UTC End_UTC 60302003008 NGC_1068 N03 2018:036:05:18:30 2018:037:11:35:00 10402002002 Crab_sl_PA330 CAL 2018:037:11:51:47 2018:037:23:15:00 10402001002 Crab CAL 2018:037:23:17:56 2018:038:10:30:00 10402003003 Crab_bkgd_PA330 CAL 2018:038:10:31:41 2018:038:21:20:00 30301014002 SGR_0526m66 N03 2018:038:21:48:24 2018:039:19:00:00