Wrong timestamps in Home Assistant graphs when running offline (Raspberry Pi 4 as local Access Point)

1

Hello everyone,

I’m currently learning how to use Home Assistant and I’m running into a few issues. I’m using Home Assistant on a Raspberry Pi 4, which is set up as an access point. Through this setup, I want to integrate soil moisture sensors. It’s important that the Raspberry Pi runs exclusively as an access point — I don’t have internet access here at the university.

My problem is that the charts in Home Assistant are showing incorrect timestamps, even though the correct time zone is selected in the settings. For example, it might currently be 6 PM, but when I add water to the soil and the measurement changes, the chart logs this change as happening at around 1 AM.

So my question is: Can this problem be solved without an internet connection? I suspect it might be related to the lack of internet access.

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2

Yes, you need a RTC or a locally available NTP server :mantelpiece_clock:

3

Hello jawid-jafari,

So 5hrs different?
Are you in US Eastern timezone?
You are probably looking at UTC time used bu the database and possibly something is messed with your time zone settings, don’t know.