# Trigger to be or not to be **URL:** \ **Category:** Flows\ **Tags:** flow, homey-bridge\ **Created:** [March 30, 2023, 10:39am UTC](https://community.homey.app/t/trigger-to-be-or-not-to-be/78625 "2023-03-30T10:39:46Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Night](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/night/32/71405_2.png) [@Night](https://community.homey.app/u/Night)\ **Post date:** [March 30, 2023, 10:39am UTC](https://community.homey.app/t/trigger-to-be-or-not-to-be/78625/1 "2023-03-30T10:39:46Z")
Hi guys. Do I need a trigger (twilight relay) to turn on and off the outdoor light automatically? I have tried to make a flow several ways but I can’t get the light to turn on by them selfs. I have several light in the garden that I want to turn on at Sundown and off at Sunrice. ---
**Author:** ![DirkG](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/dirkg/32/118897_2.png) [@DirkG](https://community.homey.app/u/DirkG)\ **Post date:** [March 30, 2023, 10:47am UTC](https://community.homey.app/t/trigger-to-be-or-not-to-be/78625/2 "2023-03-30T10:47:24Z")
> [@Night](#): > > Do I need a trigger (twilight relay) No, there are special trigger flow cards (When…) for this use case: When… → Date & Time → The sun sets/The sun rises ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/b/9/b96d94c0268afe3f2087dcd5fa628ab1e46b7962.png) (Sorry, partly in German language) ---
**Author:** ![Night](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/night/32/71405_2.png) [@Night](https://community.homey.app/u/Night)\ **Post date:** [March 30, 2023, 11:28am UTC](https://community.homey.app/t/trigger-to-be-or-not-to-be/78625/3 "2023-03-30T11:28:49Z")
Thank you for the help. I will try to set it up to turn it on and off, lets see if it works. I might ask again tomorrow if it doesn’t work.