diff --git a/doc/examples/ex46/ex46.bat b/doc/examples/ex46/ex46.bat
index 7dc61706d1b..dc70adc8661 100644
--- a/doc/examples/ex46/ex46.bat
+++ b/doc/examples/ex46/ex46.bat
@@ -1,6 +1,6 @@
 REM               GMT EXAMPLE 46
 REM
-REM Purpose:      Illustrate use of solar to plot day/night terminators
+REM Purpose:      Illustrate use of solar to plot day-night terminators
 REM GMT modules:  solar, coast, plot
 REM
 
diff --git a/doc/examples/ex46/ex46.sh b/doc/examples/ex46/ex46.sh
index 7f67239a80a..3ebbaeea524 100755
--- a/doc/examples/ex46/ex46.sh
+++ b/doc/examples/ex46/ex46.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 #               GMT EXAMPLE 46
 #
-# Purpose:      Illustrate use of solar to plot day/night terminators
+# Purpose:      Illustrate use of solar to plot day-night terminators
 # GMT modules:  solar, coast, plot
 #
 
diff --git a/doc/rst/source/gallery/ex46.rst b/doc/rst/source/gallery/ex46.rst
index 81d77109e06..690d05d68f3 100644
--- a/doc/rst/source/gallery/ex46.rst
+++ b/doc/rst/source/gallery/ex46.rst
@@ -1,11 +1,11 @@
 .. _example_46:
 
-(46) Day-light terminators and other sunlight parameters
+(46) Day-night terminators and other sunlight parameters
 --------------------------------------------------------
 
 In this example show how the module :doc:`solar </solar>`
 is used to plot several terminator lines that depend on
-the location of the sun with respect to Earth.  We also
+the location of the sun with respect to Earth. We also
 show how an EPS illustration can serve as a custom symbol
 to be plotted with :doc:`plot </plot>`.
 
@@ -16,4 +16,4 @@ to be plotted with :doc:`plot </plot>`.
    :width: 500 px
    :align: center
 
-   Day-light terminators.
+   Day-night terminators.
diff --git a/doc/rst/source/module_core_purpose.rst_ b/doc/rst/source/module_core_purpose.rst_
index 5bdf743af32..0d264a14b40 100644
--- a/doc/rst/source/module_core_purpose.rst_
+++ b/doc/rst/source/module_core_purpose.rst_
@@ -186,9 +186,9 @@
 
 .. |psscale_purpose| replace:: Plot gray scale or color scale bar
 
-.. |solar_purpose| replace:: Plot day-light terminators and other sunlight parameters
+.. |solar_purpose| replace:: Plot day-night terminators and other sunlight parameters
 
-.. |pssolar_purpose| replace:: Plot day-light terminators and other sunlight parameters
+.. |pssolar_purpose| replace:: Plot day-night terminators and other sunlight parameters
 
 .. |ternary_purpose| replace:: Plot data on ternary diagrams
 
diff --git a/doc/rst/source/solar.rst b/doc/rst/source/solar.rst
index ca773b9e59b..ce341ecba51 100644
--- a/doc/rst/source/solar.rst
+++ b/doc/rst/source/solar.rst
@@ -109,7 +109,7 @@ Optional Arguments
 **-Tdcna**\ [**+d**\ *date*][**+z**\ *TZ*]
     Plot (or dump; see **-M**\ ) one or more terminators by appending any of these directives:
 
-    - **d** - Select the day/night terminator.
+    - **d** - Select the day-night terminator.
     - **c** - Select civil twilight.
     - **n** - Select nautical twilight;
     - **a** - Select astronomical twilight.
@@ -174,9 +174,9 @@ Plot the day-night and civil twilight::
       gmt solar -W1p -Tdc
     gmt end show
 
-Set up a clip path overlay based on the day/night terminator::
+Set up a clip path overlay based on the day-night terminator::
 
-    gmt solar -G -Tc
+    gmt solar -G -Td
 
 .. module_note_begins