[SOLVED] DateTime Items compare against fixed DateTimes

[vzorglub (Vincent Regaud)]

Sorry DateTimes are a bit of a pain when it comes to conversion:
See:

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 …

Then try:

var day0String = localLastMeasurement.state.format("%1$tY%1$tm%1$td")
val day0 = new DateTime.valueOf(localLastMeasurement.state.toString)
val day1String = day0.plusDays(1).toString("yyMMdd")
val day2String = day0.plusDays(2).toString("yyMMdd")
...