I’m trying to update an item which is Datetime in Javascript items.getItem(“Door_Last_Opened”).postUpdate( time.ZonedDateTime.now()); What format do I use in Javascript to update Openhab datetime item? I’m getting the following error: 2021-12-31 16:02:40.036 [ERROR] [org.openhab.automation.scri…

This is working for me: var date = Date.now(); items.getItem("Door_Last_Opened").postUpdate(date);

[solved] Javascript postupdate datetime format?

Matze0211 (Matthias) December 31, 2021, 6:13am 2

Have you seen this tutorial on date and time conversion?
There is a conversion from java time to a datetimetype included.