NINA and Daylight Savings Time

Acquisition Deep Sky Troubleshooting
3 replies•146 views
Jerry Gerber avatar
Jerry Gerber avatar
Wouldn't you know just when I am ready for first light at my scope's new dark sky site, it would be on the day DST begins.    According to Time&Date.com, astronomical twilight ends tonight at 20:39.   But NINA is saying astronomical twilight ends at 19:39.  How do I get NINA to recognize DST?  My computer (Windows) automatically recognizes it correctly.

 Same with Telescopius, it too is an hour early. 

I'm trying to do target planning this morning and it would help if everything were in sync.  What would help even more would be if we could get rid of Daylight Savings Time forever!!!!
Engaging
Ron Stanley avatar
Ron Stanley avatar
It's a bit late now for this year but for next year, last night I scheduled an imaging run to end before 2am and then I had CCD Autopilot wait to start the next run at 3:02am.  Worked like a charm not sure about the fall when the clock moves back.  Maybe schedule a run to end at 1am and then schedule the next run to start at 2:02am.  You would lose an hour but if it worked you could image for most of the night.

-Ron
Helpful
Francesco Meschia avatar
Francesco Meschia avatar
NINA’s internals are all UTC, so they're insensitive to DST turning on or off. But that's not necessarily the case for the various drivers for your devices (e.g. the ASCOM driver for the mount), so you’ll want to test that and maybe hand-hold the changeover the first time.
Well Written Helpful Concise
Jerry Gerber avatar
Jerry Gerber avatar
I got it working, I had to reboot NINA after DST went into effect.
Related discussions
Setting time on Android Tablet While Using ASIAIR Plus
Hello, I know that the ZWO AM5 mount that I am using ignores DST and uses standard time. I'll be imaging over the weekend in Mendocino, California, which has a time zone of -7 UTC (DST) and -8 UTC (PST). Do I set my Android tablet's time manu...
DST affects mount timing; directly addresses author's meridian flip concern.
Jul 11, 2023
10Micron GM1000 mount and Daylight Savings Time
Hi all, I set the virtual hand controller's DST setting to ON this morning (Scope is at an observatory I don't have direct physical access). Should I also manually change the Time Zone as it reads -7:00 (from GMT) but it's actually -6:00 due to DST. ...
NINA DST setting issue directly matches author's problem with NINA time recognition.
Mar 8, 2026
Meridian Flip Failed
Last night I was imaging and guiding was going great, no issues. I had ASIAIR Plus 2.1 all set properly to engage the auto meridian flip. But when my object transited across the meridian, the flip didn't happen. Somehow the mount didn't get t...
DST may cause meridian flip failures with ASIAIR and ZWO mounts.
Mar 16, 2023
Sequence Analyzer V0.9
Hello everyone, As you may already know, NINA includes a useful plugin called Session Metadata, which allows you to save your metadata, weather data (if available), and image session acquisition details. These files are typically named: ImageMetaData...
NINA plugin discussion may provide insights into NINA configuration and settings.
Dec 27, 2025