diff --git a/smartapps/brianwarner/light-up-the-night.src/light-up-the-night.groovy b/smartapps/brianwarner/light-up-the-night.src/light-up-the-night.groovy
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+++ b/smartapps/brianwarner/light-up-the-night.src/light-up-the-night.groovy
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+/**
+ *  Light Up The Night
+ *
+ *  Copyright 2015 Brian Warner
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ *  in compliance with the License. You may obtain a copy of the License at:
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed
+ *  on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License
+ *  for the specific language governing permissions and limitations under the License.
+ *
+ */
+definition(
+    name: "Light Up The Night",
+    namespace: "brianwarner",
+    author: "Brian Warner",
+    description: "Turn on certain lights when a door opens at night, and turn them off a certain time after the last door closes.  Great for garage doors and driveway lights.",
+    category: "Convenience",
+    iconUrl: "http://cdn.device-icons.smartthings.com/Lighting/light9-icn.png",
+    iconX2Url: "http://cdn.device-icons.smartthings.com/Lighting/light9-icn@2x.png",
+    iconX3Url: "http://cdn.device-icons.smartthings.com/Lighting/light9-icn@3x.png")
+
+
+preferences {
+
+section() {
+    	input "contactsensors", "capability.contactSensor", multiple: true, title: "When these doors open:"
+	}
+    
+    section() {
+		input "lights", "capability.switch", required: true, multiple: true, title: "Turn on these lights:"
+    }
+    
+   section() {
+    	input "timer", "number", required: true, title: "Keep them on until all doors are closed for this many minutes:", range: "0..240"
+	}
+    
+    section() {
+    	input "sunriseoffset", "number", required: true, title: "Start turning on the lights this many minutes before sunset:", range: "0..360"
+    }
+
+    section() {
+    	input "sunsetoffset", "number", required: true, title: "Stop turning on the lights this many minutes after sunrise:", range: "0..360"
+    }
+}
+
+def installed() {
+	log.debug "Installed with settings: ${settings}"
+
+	initialize()
+}
+
+def updated() {
+	log.debug "Updated with settings: ${settings}"
+
+	unsubscribe()
+	initialize()
+}
+
+def initialize() {
+	subscribe(garagedoors, "door.open", doorOpenHandler)
+    subscribe(garagedoors, "door.closed", doorClosedHandler)
+	subscribe(contactsensors, "contact.open", doorOpenHandler)
+    subscribe(contactsensors, "contact.closed", doorClosedHandler)
+}
+
+def doorOpenHandler(evt) {
+//	log.debug "Door opened."
+	def now = new Date()
+	def sunTime = getSunriseAndSunset(sunriseOffset: "00:$sunriseoffset", sunsetOffset: "-00:$sunsetoffset")
+
+	if (now > sunTime.sunset || now < sunTime.sunrise) {
+//		log.debug "Turning lights on."
+		lights.on()
+    }
+}
+
+def doorClosedHandler(evt) {
+//	log.debug "A door closed."
+	runIn(60 * timer, checkClosed)
+}
+
+def checkClosed() {
+//	log.debug "Checking to ensure all doors are still closed."
+    
+	def contactSensorState = contactsensors.currentState("contact")
+	def anyContactSensorsOpen = contactSensorState.value.findAll {it == "open"}
+    
+    if (!anyContactSensorsOpen) {
+		def elapsed = now() - contactSensorState.date.time.max()
+	    def timeout = 1000 * 60 * timer
+    
+	    if (elapsed >= timeout) {
+//	    	log.debug "Doors have stayed closed. Turning off the lights."
+	        lights.off()
+    	} else {
+//   		log.debug "Doors were opened. Wait a little longer."
+	    }
+	} else {
+//    	log.debug "It appears a door is still open."
+    }
+}
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