The event occured at
20161205 14.47.08 A OK ID209:2.1 Reboot Variable Add.Var Add, %Reboot=1 as I set it to add a variable when Tasker restarts.
OK, here's an extract from the run log (I hope I'm sharing this the right way):
20161205 14.46.00 A OK ID76:3.1 Change Arcs.Perform Task, Change Hours Arc
20161205 14.46.00 A IfFail ID63:4.1 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.2 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.3 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.4 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.5 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.6 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.7 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.8 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.9 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.10 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.11 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.12 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.13 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.14 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.15 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.16 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.17 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.18 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.19 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.20 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.21 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.22 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.23 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.24 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.25 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.26 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.27 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.28 Change Hours Arc.Element Image
20161205 14.46.00 A IfFail ID63:4.29 Change Hours Arc.Element Image
20161205 14.46.01 A OK ID63:4.30 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.31 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.32 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.33 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.34 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.35 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.36 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.37 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.38 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.39 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.40 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.41 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.42 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.43 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.44 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.45 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.46 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.47 Change Hours Arc.Element Image
20161205 14.46.01 A IfFail ID63:4.48 Change Hours Arc.Element Image
20161205 14.46.01 T ExitOK ID63:4 Change Hours Arc
20161205 14.46.01 T Running ID37:5 Change Minutes Arc
20161205 14.46.01 A OK ID76:3.2 Change Arcs.Perform Task, Change Minutes Arc
20161205 14.46.01 T ExitOK ID76:3 Change Arcs
20161205 14.46.01 A IfFail ID37:5.1 Change Minutes Arc.Element Image
20161205 14.46.01 A IfFail ID37:5.2 Change Minutes Arc.Element Image
20161205 14.46.01 A IfFail ID37:5.3 Change Minutes Arc.Element Image
20161205 14.46.01 A IfFail ID37:5.4 Change Minutes Arc.Element Image
20161205 14.46.01 A IfFail ID37:5.5 Change Minutes Arc.Element Image
20161205 14.46.01 A IfFail ID37:5.6 Change Minutes Arc.Element Image
20161205 14.46.01 A IfFail ID37:5.7 Change Minutes Arc.Element Image
20161205 14.46.01 A IfFail ID37:5.8 Change Minutes Arc.Element Image
20161205 14.46.01 A IfFail ID37:5.9 Change Minutes Arc.Element Image
20161205 14.46.01 A OK ID37:5.10 Change Minutes Arc.Element Image
20161205 14.46.01 A IfFail ID37:5.11 Change Minutes Arc.Element Image
20161205 14.46.01 A IfFail ID37:5.12 Change Minutes Arc.Element Image
20161205 14.46.01 T ExitOK ID37:5 Change Minutes Arc
20161205 14.46.01 E Stop ID0:0.0 TaskService
20161205 14.46.59 P Inactive ID275 ReShow Tuner Button
20161205 14.46.59 P Inactive ID33 ReShow Button Changer
20161205 14.46.59 P Inactive ID274 ReShow Tempo Buttons
20161205 14.47.06 M Start ID0:0.0 Monitor
20161205 14.47.08 P Instant ID26 Update Time 2b
20161205 14.47.08 P Instant ID15 Reboot
20161205 14.47.08 P Active ID78 Wallpaper Change Day
20161205 14.47.08 P Active ID61 Get Sun Times
20161205 14.47.08 E Start ID0:0.0 TaskService
20161205 14.47.08 T Running ID69 Human Time
20161205 14.47.08 T Running ID209:2 Reboot Variable Add
20161205 14.47.08 T Running ID256:3 Wallpaper Day
20161205 14.47.08 T Running ID126:4 Get SunTimes
20161205 14.47.08 A OK ID209:2.1 Reboot Variable Add.Var Add, %Reboot=1
20161205 14.47.08 T ExitOK ID209:2 Reboot Variable Add
20161205 14.47.08 A OK ID69.1 Human Time.Var Set, %MyTime=14.47
20161205 14.47.08 A OK ID69.2 Human Time.Var Search Replace, %MyTime=14:47
20161205 14.47.08 T Running ID29:5 Time Splitter
20161205 14.47.08 A OK ID69.3 Human Time.Perform Task, Time Splitter
20161205 14.47.08 A OK ID29:5.1 Time Splitter.Var Set, %Hours=14:47
20161205 14.47.08 A OK ID29:5.2 Time Splitter.Var Section, %Hours=14:47, %MyHours=14
20161205 14.47.09 A OK ID29:5.3 Time Splitter.Var Set, %Minutes=14:47
20161205 14.47.09 A OK ID29:5.4 Time Splitter.Var Section, %Minutes=14:47, %MyMinutes=47
20161205 14.47.09 T ExitOK ID29:5 Time Splitter