From c1f6e7ef5f959bf93c3b7169c1b09981730caf2b Mon Sep 17 00:00:00 2001
From: Franck Nijhof <git@frenck.dev>
Date: Mon, 7 Jun 2021 18:24:16 +0200
Subject: [PATCH] Add referencing sensor entities for before/after in time
 conditions (#18115)

---
 source/_docs/scripts/conditions.markdown | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/source/_docs/scripts/conditions.markdown b/source/_docs/scripts/conditions.markdown
index f6578d05df3..451e0151166 100644
--- a/source/_docs/scripts/conditions.markdown
+++ b/source/_docs/scripts/conditions.markdown
@@ -474,15 +474,29 @@ A better weekday condition could be by using the [Workday Binary Sensor](/integr
 
 </div>
 
-For the `after` and `before` options a time helper (`input_datetime` entity) can be used instead.
+For the `after` and `before` options a time helper (`input_datetime` entity)
+or another `sensor` entity containing a timestamp with the "timestamp" device
+class, can be used instead.
 
 ```yaml
 condition:
-  condition: time
-  after: input_datetime.house_silent_hours_start
-  before: input_datetime.house_silent_hours_end
+  - alias: "Example referencing a time helper"
+    condition: time
+    after: input_datetime.house_silent_hours_start
+    before: input_datetime.house_silent_hours_end
+
+  - alias: "Example referencing another sensor"
+    after: sensor.groceries_delivery_time
 ```
 
+<div class='note warning'>
+
+Please note that the time condition only takes the time into account. If
+an referenced sensor or helper entity contains a timestamp with a date, the
+date part is fully ignored.
+
+</div>
+
 ## Zone condition
 
 Zone conditions test if an entity is in a certain zone. For zone automation to work, you need to have set up a device tracker platform that supports reporting GPS coordinates.