Add cookbook

source/cookbook/automation_sun.markdown

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+---
+layout: page
+title: "Automation examples using the sun"
+description: "Automation examples that use the sun."
+date: 2015-10-08 19:05
+sidebar: false
+comments: false
+sharing: true
+footer: true
+---
+
+#### Turn on the living room lights 45 minutes before sunset if anyone home
+
+```yaml
+automation:
+  trigger:
+    platform: sun
+    event: sunset
+    offset: "-00:45:00"
+  condition:
+    platform: state
+    entity_id: group.all_devices
+    state: home
+  action:
+    service: homeassistant.turn_on
+    entity_id: group.living_room_lights
+```
+
+#### Natural wake up light
+_Note, Philips Hue is currently the only light platform that support transitions._
+```yaml
+automation:
+  trigger:
+    platform: time
+    after: "07:15:00"
+  action:
+    service: light.turn_on
+    entity_id: light.bedroom
+    data:
+      # 900 seconds = 15 minutes
+      transition: 900
+```