diff --git a/date_views/includes/date_views_plugin_pager.inc b/date_views/includes/date_views_plugin_pager.inc
index 1addd20..99f89b3 100644
--- a/date_views/includes/date_views_plugin_pager.inc
+++ b/date_views/includes/date_views_plugin_pager.inc
@@ -279,10 +279,28 @@ class date_views_plugin_pager extends views_plugin_pager {
           $this->view->date_info->next_date = $nextdate ? new DateObject($nextdate, NULL, $format) : NULL;
         }
         else {
+          $granularity = trim(drupal_strtolower($argument->date_handler->granularity));
+
+          $map = array(
+            'prev-default' => '-1 ' . $granularity,
+            'prev' => array(
+              // List of exception patterns for relative dates generation.
+              'month' => 'first day of previous month',
+            ),
+            'next-default' => '+1 ' . $granularity,
+            'next' => array(
+              // List of exception patterns for relative dates generation.
+              'month' => 'last day of next month',
+            ),
+          );
+
           $this->view->date_info->prev_date = clone($argument->min_date);
-          date_modify($this->view->date_info->prev_date, '-1 ' . $argument->date_handler->granularity);
-          $this->view->date_info->next_date = clone($argument->min_date);
-          date_modify($this->view->date_info->next_date, '+1 ' . $argument->date_handler->granularity);
+          $modifier_prev = isset($map['prev'][$granularity]) ? $map['prev'][$granularity] : $map['prev-default'];
+          date_modify($this->view->date_info->prev_date, $modifier_prev);
+
+          $this->view->date_info->next_date = clone($argument->max_date);
+          $modifier_next = isset($map['next'][$granularity]) ? $map['next'][$granularity] : $map['next-default'];
+          date_modify($this->view->date_info->next_date, $modifier_next);
         }
         // Write the date_info properties that depend on the current value.
         $this->view->date_info->year = date_format($argument->min_date, 'Y');