this is the flow working (without [°] in the compass gauge) :
[{"id":"ecaab073.c7e0b","type":"inject","z":"7b1045d6.2de07c","name":"make request","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":"","x":154.2857208251953,"y":527.1428833007812,"wires":[["3739bab7.8c3b66"]]},{"id":"3739bab7.8c3b66","type":"sunpos","z":"7b1045d6.2de07c","name":"","lon":"6.4751","lat":"43.5427","start":"sunrise","startoffset":0,"end":"sunset","endoffset":0,"x":314.52381896972656,"y":527.0598602294922,"wires":[["40006f37.e60ff"]]},{"id":"40006f37.e60ff","type":"function","z":"7b1045d6.2de07c","name":"endTime +alt/azi+icone","func":"var seconds = msg.payload.endTime;\nvar endLocaleTime;\nvar azimuth = Math.round(msg.payload.azimuth*10)/10;//msg.payload.azimuth;//azimuth = azimuth.toFixed(1);\nvar altitude = Math.round(msg.payload.altitude*10)/10;//msg.payload.altitude;//altitude = altitude.toFixed(1);\nvar sunInSky = msg.payload.sunInSky;\n\n//transforme epoch en 21:01:449\nvar d = new Date(msg.payload.endTime);\nvar n = d.toLocaleTimeString();\nendLocaleTime = n;\n\n//compare si nuit ou jour ?\nvar secondsNow = msg.time;\nif (secondsNow > seconds || secondsNow < msg.startTime){\n flow.set('wvcPow5min',0 ); //evite 0.8w toute la nuit\n msg.razCountEnergy = 0;\n msg.state = \"wvcPow5min=0 !\";\n msg.icone = 'https://cdn.icon-icons.com/icons2/1370/PNG/128/if-weather-4-2682847_90799.png';//https://cdn.icon-icons.com/icons2/799/PNG/128/night-01_icon-icons.com_65776.png';//https://cdn.icon-icons.com/icons2/1465/PNG/512/640crescentmoon_100402.png';\n msg.title = 'Stand by !' ;\n \n}else{\n msg.razCountEnergy = 0;\n msg.state = \"Production !\";\n msg.icone = 'https://cdn.icon-icons.com/icons2/1370/PNG/128/if-weather-3-2682848_90785.png';//https://cdn.icon-icons.com/icons2/799/PNG/128/sunny512x512-01_icon-icons.com_65775.png';//https://cdn.icon-icons.com/icons2/1465/PNG/512/643sunwithface_101008.png';\n msg.title = 'Working good !' ;\n \n}if (secondsNow == seconds){\n msg.razCountEnergy = 1;\n msg.state = \"Production en pause !\";\n }\n\n//********** affiche le status du Node **********\nnode.status({text:n}); //value});\n\n//prepare les sorties\n node.send([{\n startTime:msg.startTime,\n endTime:msg.endTime,\n endLocaleTime:endLocaleTime,\n seconds:seconds,\n azimuth:azimuth,\n altitude:altitude\n \n },null,null]);\n \n node.send([null,{\n state:msg.state,\n icone:msg.icone,\n title:msg.title,\n razCountEnergy:msg.razCountEnergy,\n sunInSky:sunInSky\n \n },null]);\n //POUR TEST\n node.send([null,null,{\n payload:altitude\n \n }]);\n","outputs":3,"noerr":0,"x":542.8928680419922,"y":526.7383728027344,"wires":[["5e4c1eaa.9496c","7be13895.ee58f8","7154520d.6a23ac","b24062a1.29372"],["34e8b65.3fc404a","e163232e.853c7"],[]]},{"id":"7154520d.6a23ac","type":"ui_gauge","z":"7b1045d6.2de07c","name":"gaugeAzimuth","group":"8aeba035.813e","order":12,"width":"4","height":"3","gtype":"compass","title":"","label":"","format":"{{azimuth}}","min":"0","max":"359","colors":["#ffff80","#ff8000","#ca3838"],"seg1":"","seg2":"","x":803.9526519775391,"y":507.3454704284668,"wires":[]},{"id":"7be13895.ee58f8","type":"ui_gauge","z":"7b1045d6.2de07c","name":"gaugeAltitude","group":"8aeba035.813e","order":11,"width":"4","height":"3","gtype":"compass","title":"","label":"","format":"{{altitude}}","min":0,"max":"359","colors":["#ffff80","#ff8000","#ca3838"],"seg1":"","seg2":"","x":806.8094673156738,"y":478.7743558883667,"wires":[]},{"id":"5e4c1eaa.9496c","type":"ui_text","z":"7b1045d6.2de07c","group":"8aeba035.813e","order":5,"width":"3","height":"1","name":"alti/azi","label":"<font color=grey><b>altitude: <font color=white>{{altitude}}°</b>","format":"<font color=grey>azimuth:<font color=white> {{azimuth}}°","layout":"row-left","x":765.8370094299316,"y":445.9072914123535,"wires":[]},{"id":"34e8b65.3fc404a","type":"ui_template","z":"7b1045d6.2de07c","group":"8aeba035.813e","name":"status","order":8,"width":"4","height":"1","format":"<p>\n<font color=grey>{{msg.state}}</font>\n<img width=\"30\" height=\"30\" src= {{msg.icone}} alt='Not found' title={{msg.title}} />\n</p>\n\n<!--\n{{msg.event}}\n<p>\n <font color=grey>Status: </font>\n<img width=\"30\" height=\"30\" src= {{msg.payload}} alt='Not found' title={{msg.title}} />\n{{msg.event}}\n</p>\n-->\n\n\n\n<!--\n<strong> </strong>\n<div height=\"50\" style=\"height: 50px;\">\n<img src=\"http://educainternet.es/documents/10718/download\" width=\"35\"><br/>\n</div>\n\nhttps://pngimage.net/wp-content/uploads/2018/06/power-on-png-1.png\nhttp://educainternet.es/documents/10718/download\nhttps://pngimage.net/wp-content/uploads/2018/06/power-off-png-5.png\nhttps://pngimage.net/wp-content/uploads/2018/06/power-on-png-6.png\nhttps://pngimage.net/wp-content/uploads/2018/06/power-off-png-2.png\nhttps://banner2.kisspng.com/20180404/euq/kisspng-computer-icons-electrical-switches-button-off-5ac452e9048ee7.9894894815228157210187.jpg\n\n<div ng-bind-html=\"msg.payload\"></div>\n\n<div height=\"50\" style=\"height: 50px;\" ng-click=\"send({payload:'Clicked'});\">\n<img src=\"http://educainternet.es/documents/10718/download\" width=\"35\"><br/>\n</div>\n\n<div height=\"50\" style=\"height: 50px;\">\n<img src=\"http://educainternet.es/documents/10718/download\" width=\"35\"><br/>\n</div>\n\n<div height=\"50\" style=\"height: 50px;\" ng-bind-html=\"msg.payload\" width=\"35\">\n</div>\n\n<div height=\"50\" style=\"height: 50px;\">\n<div ng-bind-html=\"msg.payload\" width=\"35\"><br/>\n</div>\n\n<div style=\"display: inline-block; width: 150px; height: 150px;\" ng-click=\"send({payload:'Clicked'});\">\n<img src=\"/Block_Gray.png\" width=\"140\"><br/>\n</div>\n\n\n\n-->\n\n\n","storeOutMessages":true,"fwdInMessages":true,"templateScope":"local","x":772.8571662902832,"y":541.4286489486694,"wires":[[]]},{"id":"e163232e.853c7","type":"ui_text","z":"7b1045d6.2de07c","group":"8aeba035.813e","order":7,"width":"4","height":"1","name":"sunInSky","label":"<font color=grey>sunInSky: </font>{{sunInSky}}","format":"","layout":"row-left","x":923.7144203186035,"y":542.0007133483887,"wires":[]},{"id":"b24062a1.29372","type":"ui_text","z":"7b1045d6.2de07c","group":"8aeba035.813e","order":6,"width":"4","height":"1","name":"endTime","label":"<font color=grey>{{seconds}}s","format":"{{endLocaleTime}}","layout":"row-left","x":958.6549530029297,"y":490.3574161529541,"wires":[]},{"id":"8aeba035.813e","type":"ui_group","z":"","name":"Power","tab":"255f2630.e1c57a","order":1,"disp":true,"width":"12","collapse":true},{"id":"255f2630.e1c57a","type":"ui_tab","z":"","name":"wvc","icon":"flash_on","order":2,"disabled":false,"hidden":false}]
[EDIT] : i try your flow and working good !