Timer Widget / Countdown Widget with Alexa (Date Difference)

[MDAR (Stuart Hanlon, UK importer of Velbus hardware)]

I’ve only just discovered epoch time format, would using that make the maths work?

I think DLS rules can happily convert DateTime Items to Epoch

DateTime Conversion (openHAB 2.x)

Because openHAB 3.x rules now use Java Time API instead of Jodatime, there is a new DateTime Conversion thread for openHAB 3.x. Overview In openHab 2.x there are different ways to handle Date/Time values. DateTimeType A DateTime Item carries a DateTimeType. Joda DateTime By default openHAB 2.x-Rules use a Joda DateTime class to represent time, most notably now. Epoch The lowest common denominator when working with time is to get at the epoc value. Epoc is the number of milliseconds …

Time of Day Events - An easy approach

A very frequent problem when writing rules is how to determine if it is currently DAY Time of NIGHT Time in order your rules to take different paths . Many solutions have already been provided in the community forum, some more easy than others. A very simple approach would be just to follow the daily events using the Astro binding. This is based on the fact the Sun Rise will ALWAYS follow Sun Set and vice versa. The same logic applies for any event during the day. eg Night time will always co…