Indigo Domotics

First let me start by saying there's no issue here... just curious.

I have a schedule that runs to turn on a device, with a 40 minute delay to turn off that device. I'm curious why/how the device turns off after 39 minutes and 44 seconds(or the logs perceive it to):

Code: Select all

Jul 30, 2017, 8:00:00 PM
   Schedule                        Run Basement Fan
   Sent INSTEON                    "Basement Fan" on
... other stuff happens ...
Jul 30, 2017, 8:39:44 PM
   Schedule                        Run Basement Fan (delayed action)
   Sent INSTEON                    "Basement Fan" off


That is pretty odd. I could see it being off (late) by a few seconds for a several reasons (say an embedded AppleScript is running) but to have it execute 16 seconds early is really strange. Does it consistently execute early?