Using and showing always local time

routes/api.js
   - console.log deleted

public/javascripts/global.js
   - made 'params' to const
   - added setNoUTC in main

public/javascripts/showcharts.js
   - added setNiUTC to set global at highcharts

package.json
   - added luxon
     "version": "3.0.4",
     "date": "2023-04-24 18:00 UTC",

public/javascripts/datetime.js

@@ -10,6 +10,31 @@ export const showDate = (sofort) => {
 
 }
 
+/* ToDo:
+        // Alle Minute die ktuelle Urzeit anzeigen und
+        //  den Plot für Tages - und Wochendaten updaten.
+        //   Alle 'refreshRate' plus 15sec die Grafiken neu zeichnen
+        //   Die Funktion wird alle Sekunde aufgerufen !
+        //
+function showUhrzeit(sofort) {
+    var d = moment()                                                                // akt. Zeit holen
+    if (sofort || (d.second() == 0)) {                              // Wenn Minute grade um
+        $('#h1uhr').html(d.format('HH:mm'));
+        $('#subtitle').html(d.format('YYYY-MM-DD'));                // dann zeit anzeigen
+    }
+    if (((d.minute() % refreshRate) == 0) && (d.second() == 15)) {  // alle ganzen refreshRate Minuten, 15sec danach
+        console.log(refreshRate, 'Minuten um, Grafik wird erneuert');
+        if ((aktsensorid != 'map') && (doUpdate == true)) {     // Wenn nicht die Karte, dann
+            doPlot('oneday',startDay);                                              // Tages- und
+            doPlot('oneweek',startDay);                                             // Wochenplot erneuern
+        }
+        else {
+            fetchAktualData();
+        }
+    }
+}
+
+*/
 export const formatJSDate = (d) => {
     return DateTime.fromJSDate(d).toFormat('yyyy-LL-dd HH:mm:ss')
 }

public/javascripts/global.js

@@ -3,7 +3,7 @@
 
 import * as map from './map.js'
 import * as dt from './datetime.js'
-import {loadAll, showChart} from './showcharts.js'
+import {loadAll, showChart, setNoUTC} from './showcharts.js'
 import { DateTime } from './luxon.min.js'
 import {setCurrentTab, getCurrentTab, showError, fetchfromserver} from "./chart_utilities.js";
 
@@ -14,7 +14,7 @@ import {setCurrentTab, getCurrentTab, showError, fetchfromserver} from "./chart_
     // END global constants
 
     // global variables
-    let params = {                                  // set defaults
+    const params = {                                  // set defaults
         center: Stuttgart,
         zoom: 10,
         span: 1,
@@ -125,6 +125,8 @@ import {setCurrentTab, getCurrentTab, showError, fetchfromserver} from "./chart_
     // show the map if called w/o any parameter
     // if called with a sensor-ID, show the live chart for this sensor
     async function main() {
+        setNoUTC()                                              // no UTC for HighCharts
+        console.log(Intl.DateTimeFormat().resolvedOptions().timeZone)
         // set correct language
         const currentLang =  localStorage.getItem('curlang')
         if(currentLang === 'en') {

public/javascripts/showcharts.js

@@ -19,7 +19,7 @@ export async function showChart(params, typ, container) {
     function form() {
         for (let item of tabtable) {
             if (item.type === typ) {
-                const d = DateTime.fromMillis(this.x, {zone: 'utc'})
+                const d = DateTime.fromMillis(this.x)
                 const d1 = d.plus({days: 1})
                 let fmt = d.toFormat(item.dformat)
                 if (((typ === 'daynight') && (this.series.name.startsWith('N'))) || (typ === 'lden')) {
@@ -112,3 +112,11 @@ export const loadAll = async (params, start = 2) => {
         }
     }
 }
+
+export const setNoUTC = () => {
+    Highcharts.setOptions({
+        global: {
+            useUTC: false                                   // Don't use UTC on the charts
+        }
+    });
+}