diff --git a/almanac-block.tpl.php b/almanac-block.tpl.php
index e8b8669..629dfef 100644
--- a/almanac-block.tpl.php
+++ b/almanac-block.tpl.php
@@ -16,8 +16,8 @@
   <table>
     <tr>
       <th><?php print t('Sun'); ?></th>
-      <th><?php print t('Rise') ?></th>
-      <th><?php print t('Set') ?></th>
+      <th><?php print t('Rise', null, array('context' => 'Sun orbit')); ?></th>
+      <th><?php print t('Set', null, array('context' => 'Sun orbit')); ?></th>
     </tr>
 <?php if (!empty($block_settings['sun']['actual'])) : ?>
     <tr>
@@ -84,8 +84,8 @@
   <table>
     <tr>
       <th><?php print t('Moon'); ?></th>
-      <th><?php print t('Rise') ?></th>
-      <th><?php print t('Set') ?></th>
+      <th><?php print t('Rise', null, array('context' => 'Moon orbit')) ?></th>
+      <th><?php print t('Set', null, array('context' => 'Moon orbit')) ?></th>
     </tr>
 <?php if (!empty($block_settings['moon']['actual'])) : ?>
     <tr>
diff --git a/almanac-page.tpl.php b/almanac-page.tpl.php
index 2bd5731..1cfe4fe 100644
--- a/almanac-page.tpl.php
+++ b/almanac-page.tpl.php
@@ -12,8 +12,8 @@
   <table>
     <tr>
       <th><?php print t('Sun'); ?></th>
-      <th><?php print t('Rise') ?></th>
-      <th><?php print t('Set') ?></th>
+      <th><?php print t('Rise', null, array('context' => 'Sun orbit')) ?></th>
+      <th><?php print t('Set', null, array('context' => 'Sun orbit')) ?></th>
     </tr>
     <tr>
       <td><?php print t('Actual'); ?></td>
@@ -60,8 +60,8 @@
   <table>
     <tr>
       <th><?php print t('Moon'); ?></th>
-      <th><?php print t('Rise') ?></th>
-      <th><?php print t('Set') ?></th>
+      <th><?php print t('Rise', null, array('context' => 'Moon orbit')) ?></th>
+      <th><?php print t('Set', null, array('context' => 'Moon orbit')) ?></th>
     </tr>
     <tr>
       <td>&nbsp;</td>
diff --git a/includes/phases.inc b/includes/phases.inc
index 22917dd..ea031ee 100644
--- a/includes/phases.inc
+++ b/includes/phases.inc
@@ -16,21 +16,21 @@
  *   correct phase name.
  */
 
-define('MP_NEW_MOON_NAME', 'New Moon');
+define('MP_NEW_MOON_NAME', t('New Moon', null, array('context' => 'Moon cycle'));
 define('MP_NEW_MOON_ID', 0);
-define('MP_WAXING_CRESCENT_NAME', 'Waxing Crescent');
+define('MP_WAXING_CRESCENT_NAME', t('Waxing Crescent', null, array('context' => 'Moon cycle')));
 define('MP_WAXING_CRESCENT_ID', 1);
-define('MP_FIRST_QUARTER_NAME', 'First Quarter');
+define('MP_FIRST_QUARTER_NAME', t('First Quarter', null, array('context' => 'Moon cycle')));
 define('MP_FIRST_QUARTER_ID', 2);
-define('MP_WAXING_GIBBOUS_NAME', 'Waxing Gibbous');
+define('MP_WAXING_GIBBOUS_NAME', t('Waxing Gibbous', null, array('context' => 'Moon cycle')));
 define('MP_WAXING_GIBBOUS_ID', 3);
-define('MP_FULL_MOON_NAME', 'Full Moon');
+define('MP_FULL_MOON_NAME', t('Full Moon'));
 define('MP_FULL_MOON_ID', 4);
-define('MP_WANING_GIBBOUS_NAME', 'Waning Gibbous');
+define('MP_WANING_GIBBOUS_NAME', t('Waning Gibbous', null, array('context' => 'Moon cycle')));
 define('MP_WANING_GIBBOUS_ID', 5);
-define('MP_THIRD_QUARTER_MOON_NAME', 'Third Quarter');
+define('MP_THIRD_QUARTER_MOON_NAME', t('Third Quarter', null, array('context' => 'Moon cycle')));
 define('MP_THIRD_QUARTER_MOON_ID', 6);
-define('MP_WANING_CRESCENT_NAME', 'Waning Crescent');
+define('MP_WANING_CRESCENT_NAME', t('Waning Crescent', null, array('context' => 'Moon cycle')));
 define('MP_WANING_CRESCENT_ID', 7);
 define('MP_DAY_IN_SECONDS', 86400);