A simple node indicating if it's day or night.
The node sets: msg.payload to boolean true or false payloads.
It also sets a global isNight accessible in all flows.
It sends a true payload if it is dark and false if not dark.
The second output emits only on the transition between night to day or day to night.
Here are some examples:
[{"id":"d679cbec.b156b8","type":"function","z":"b365304f.a85de","name":"Check if isNight is true","func":"var isNight = global.get(\"isNight\");\nif (isNight === true)\n{\n //do something\n //e.g turn on christmas tree lights\n}\nif (isNight === false)\n{\n //do something\n //e.g turn off all lights\n}\n// you can use this function anywhere \n// without using multiple nighttime nodes\n// just have the inject trigger this function","outputs":1,"noerr":0,"x":500,"y":280,"wires":[[]]},{"id":"26b1bd5b.2216a2","type":"ui_switch","z":"b365304f.a85de","name":"","label":"Christmas Lights","group":"fe8c1b89.b8c8f8","order":0,"width":0,"height":0,"passthru":false,"decouple":"true","topic":"","style":"","onvalue":"true","onvalueType":"bool","onicon":"","oncolor":"","offvalue":"false","offvalueType":"bool","officon":"","offcolor":"","x":450,"y":140,"wires":[[]]},{"id":"973c907.80f1f7","type":"nighttime","z":"b365304f.a85de","name":"Home","lon":"-117.66053","lat":"33.56086","start":"goldenHourEnd","end":"goldenHour","x":210,"y":140,"wires":[["26b1bd5b.2216a2"],[]]},{"id":"cb23da59.3a1d28","type":"inject","z":"b365304f.a85de","name":"","topic":"","payload":"","payloadType":"date","repeat":"60","crontab":"","once":false,"onceDelay":0.1,"x":230,"y":280,"wires":[["d679cbec.b156b8"]]},{"id":"fe8c1b89.b8c8f8","type":"ui_group","z":"","name":"Weather","tab":"65f7f859.acb6c8","order":1,"disp":true,"width":"6","collapse":true},{"id":"65f7f859.acb6c8","type":"ui_tab","z":"","name":"Home","icon":"dashboard","order":1}]