diff --git a/reference/datetime/functions/date-sun-info.xml b/reference/datetime/functions/date-sun-info.xml
index f3234dbefc..41cb40d0ff 100644
--- a/reference/datetime/functions/date-sun-info.xml
+++ b/reference/datetime/functions/date-sun-info.xml
@@ -51,6 +51,90 @@
&reftitle.returnvalues;
Returns array on success&return.falseforfailure;.
+ The structure of the array is detailed in the following list:
+
+
+
+
+ sunrise
+
+
+ The time of the sunrise.
+
+
+
+
+ sunset
+
+
+ The time of the sunset.
+
+
+
+
+ transit
+
+
+ The time when the sun is at its zenith, i.e. has reached its topmost
+ point.
+
+
+
+
+ civil_twilight_begin
+
+
+ The start of the civil dawn. It ends at sunrise.
+
+
+
+
+ civil_twilight_end
+
+
+ The end of the civil dusk. It starts at sunset.
+
+
+
+
+ nautical_twilight_begin
+
+
+ The start of the nautical dawn. It ends at
+ civil_twilight_begin.
+
+
+
+
+ nautical_twilight_end
+
+
+ The end of the nautical dusk. It starts at
+ civil_twilight_end.
+
+
+
+
+ astronomical_twilight_begin
+
+
+ The start of the astronomical dawn. It ends at
+ nautical_twilight_begin.
+
+
+
+
+ astronomical_twilight_end
+
+
+ The end of the astronomical dusk. It starts at
+ nautical_twilight_end.
+
+
+
+
+
+
The values of the array elements are either UNIX timestamps, &false; if the
sun is below the respective zenith for the whole day, or &true; if the sun is
above the respective zenith for the whole day.