I think this is probably true. In an app I am working on, I put an arbitrary 1 minute offset to rise and set times in case the user doesn’t opt for an offset. It’s been only a few weeks but it has been reliable except for one failure which I am trying to troubleshoot here: [OBSOLETE] Dusk-to-Dawn Light Control with Lux control and Motion Dimming - RC2 - #29 by AaronZON
. . . yea, I know, shameless cross-post 