diff --git a/src/Search/Filters/PostFilter.php b/src/Search/Filters/PostFilter.php
index 5bac8cdb..c87ba2fc 100644
--- a/src/Search/Filters/PostFilter.php
+++ b/src/Search/Filters/PostFilter.php
@@ -20,6 +20,7 @@ class PostFilter extends BasicFilter implements IFilter
     const REQUIREMENT_TAG = 'tag';
     const REQUIREMENT_ID = 'id';
     const REQUIREMENT_CREATION_TIME = 'creationTime';
+    const REQUIREMENT_LAST_EDIT_TIME = 'lastEditTime';
     const REQUIREMENT_HASH = 'name';
     const REQUIREMENT_TAG_COUNT = 'tagCount';
     const REQUIREMENT_FAV_COUNT = 'favCount';
diff --git a/src/Search/Parsers/AbstractSearchParser.php b/src/Search/Parsers/AbstractSearchParser.php
index b5b64108..a2f8937b 100644
--- a/src/Search/Parsers/AbstractSearchParser.php
+++ b/src/Search/Parsers/AbstractSearchParser.php
@@ -96,6 +96,31 @@ abstract class AbstractSearchParser
         $filter->addRequirement($requirement);
     }
 
+    protected function addRequirementFromDateRangeToken($filter, $token, $type)
+    {
+        if (substr_count($token->getValue(), '..') === 1)
+        {
+            list ($dateMin, $dateMax) = explode('..', $token->getValue());
+            $timeMin = $this->dateToTime($dateMin)[0];
+            $timeMax = $this->dateToTime($dateMax)[1];
+        }
+        else
+        {
+            $date = $token->getValue();
+            list ($timeMin, $timeMax) = $this->dateToTime($date);
+        }
+
+        $finalString = '';
+        if ($timeMin)
+            $finalString .= date('c', $timeMin);
+        $finalString .= '..';
+        if ($timeMax)
+            $finalString .= date('c', $timeMax);
+
+        $token->setValue($finalString);
+        $this->addRequirementFromToken($filter, $token, $type, self::ALLOW_RANGES);
+    }
+
     private function getOrderColumn($tokenText)
     {
         $map = $this->getOrderColumnMap();
@@ -204,4 +229,47 @@ abstract class AbstractSearchParser
         return str_replace('_', '', strtolower($text));
     }
 
+    private function dateToTime($value)
+    {
+        $value = strtolower(trim($value));
+        if (!$value)
+        {
+            return null;
+        }
+        elseif ($value === 'today')
+        {
+            $timeMin = mktime(0, 0, 0);
+            $timeMax = mktime(24, 0, -1);
+        }
+        elseif ($value === 'yesterday')
+        {
+            $timeMin = mktime(-24, 0, 0);
+            $timeMax = mktime(0, 0, -1);
+        }
+        elseif (preg_match('/^(\d{4})$/', $value, $matches))
+        {
+            $year = intval($matches[1]);
+            $timeMin = mktime(0, 0, 0, 1, 1, $year);
+            $timeMax = mktime(0, 0, -1, 1, 1, $year + 1);
+        }
+        elseif (preg_match('/^(\d{4})-(\d{1,2})$/', $value, $matches))
+        {
+            $year = intval($matches[1]);
+            $month = intval($matches[2]);
+            $timeMin = mktime(0, 0, 0, $month, 1, $year);
+            $timeMax = mktime(0, 0, -1, $month + 1, 1, $year);
+        }
+        elseif (preg_match('/^(\d{4})-(\d{1,2})-(\d{1,2})$/', $value, $matches))
+        {
+            $year = intval($matches[1]);
+            $month = intval($matches[2]);
+            $day = intval($matches[3]);
+            $timeMin = mktime(0, 0, 0, $month, $day, $year);
+            $timeMax = mktime(0, 0, -1, $month, $day + 1, $year);
+        }
+        else
+            throw new \Exception('Invalid date format: ' . $value);
+
+        return [$timeMin, $timeMax];
+    }
 }
diff --git a/src/Search/Parsers/PostSearchParser.php b/src/Search/Parsers/PostSearchParser.php
index b1d1812f..0908c39b 100644
--- a/src/Search/Parsers/PostSearchParser.php
+++ b/src/Search/Parsers/PostSearchParser.php
@@ -66,7 +66,8 @@ class PostSearchParser extends AbstractSearchParser
         [
             [['id'], [$this, 'addIdRequirement']],
             [['hash', 'name'], [$this, 'addHashRequirement']],
-            [['date', 'time'], [$this, 'addDateRequirement']],
+            [['date', 'time', 'creation_date', 'creation_time'], [$this, 'addCreationTimeRequirement']],
+            [['edit_date', 'edit_time'], [$this, 'addLastEditTimeRequirement']],
             [['tag_count', 'tags'], [$this, 'addTagCountRequirement']],
             [['fav_count', 'favs'], [$this, 'addFavCountRequirement']],
             [['comment_count', 'comments'], [$this, 'addCommentCountRequirement']],
@@ -181,33 +182,20 @@ class PostSearchParser extends AbstractSearchParser
             self::ALLOW_COMPOSITE);
     }
 
-    private function addDateRequirement($filter, $token)
+    private function addCreationTimeRequirement($filter, $token)
     {
-        if (substr_count($token->getValue(), '..') === 1)
-        {
-            list ($dateMin, $dateMax) = explode('..', $token->getValue());
-            $timeMin = $this->dateToTime($dateMin)[0];
-            $timeMax = $this->dateToTime($dateMax)[1];
-        }
-        else
-        {
-            $date = $token->getValue();
-            list ($timeMin, $timeMax) = $this->dateToTime($date);
-        }
-
-        $finalString = '';
-        if ($timeMin)
-            $finalString .= date('c', $timeMin);
-        $finalString .= '..';
-        if ($timeMax)
-            $finalString .= date('c', $timeMax);
-
-        $token->setValue($finalString);
-        $this->addRequirementFromToken(
+        $this->addRequirementFromDateRangeToken(
             $filter,
             $token,
-            PostFilter::REQUIREMENT_CREATION_TIME,
-            self::ALLOW_RANGES);
+            PostFilter::REQUIREMENT_CREATION_TIME);
+    }
+
+    private function addLastEditTimeRequirement($filter, $token)
+    {
+        $this->addRequirementFromDateRangeToken(
+            $filter,
+            $token,
+            PostFilter::REQUIREMENT_LAST_EDIT_TIME);
     }
 
     private function addTagCountRequirement($filter, $token)
@@ -318,48 +306,4 @@ class PostSearchParser extends AbstractSearchParser
         $requirement->setNegated($isNegated);
         $filter->addRequirement($requirement);
     }
-
-    private function dateToTime($value)
-    {
-        $value = strtolower(trim($value));
-        if (!$value)
-        {
-            return null;
-        }
-        elseif ($value === 'today')
-        {
-            $timeMin = mktime(0, 0, 0);
-            $timeMax = mktime(24, 0, -1);
-        }
-        elseif ($value === 'yesterday')
-        {
-            $timeMin = mktime(-24, 0, 0);
-            $timeMax = mktime(0, 0, -1);
-        }
-        elseif (preg_match('/^(\d{4})$/', $value, $matches))
-        {
-            $year = intval($matches[1]);
-            $timeMin = mktime(0, 0, 0, 1, 1, $year);
-            $timeMax = mktime(0, 0, -1, 1, 1, $year + 1);
-        }
-        elseif (preg_match('/^(\d{4})-(\d{1,2})$/', $value, $matches))
-        {
-            $year = intval($matches[1]);
-            $month = intval($matches[2]);
-            $timeMin = mktime(0, 0, 0, $month, 1, $year);
-            $timeMax = mktime(0, 0, -1, $month + 1, 1, $year);
-        }
-        elseif (preg_match('/^(\d{4})-(\d{1,2})-(\d{1,2})$/', $value, $matches))
-        {
-            $year = intval($matches[1]);
-            $month = intval($matches[2]);
-            $day = intval($matches[3]);
-            $timeMin = mktime(0, 0, 0, $month, $day, $year);
-            $timeMax = mktime(0, 0, -1, $month, $day + 1, $year);
-        }
-        else
-            throw new \Exception('Invalid date format: ' . $value);
-
-        return [$timeMin, $timeMax];
-    }
 }