I meant about general showing data based on converted time.
Measurements are made in Time Zone e.g. Moscow (+2 of UTC), next are converted to UTC and storage, next sent to SCADA by API and storage in UTC(.dat). Finally it think about showing with converting in ScadaWeb to another Time Zone e.g. Hong Kong( +8 of UTC).
Well, you just need to add +8 hours to display in another Scada. The Scada variable itself is stored in double format and it is more convenient to already have a DateTime structure in it
You can see how to add the clock directly to UTC time, it seems that everything is in seconds there. And add this addition to the formula above and only then convert to DateTime or store real UTC time in one cell and already perform conversions and show it in the pre-calculation one.