diff --git a/hwe/commandlist.php b/hwe/commandlist.php
index 233b32f0..9662029b 100644
--- a/hwe/commandlist.php
+++ b/hwe/commandlist.php
@@ -78,7 +78,7 @@ function myCommandList() {
     $date = date('Y-m-d H:i:s');
 
     // 명령 목록
-    $admin = $gameStor->getValues(['year','month','turnterm']);
+    $admin = $gameStor->getValues(['year','month','turnterm','turntime']);
 
     $me = $db->queryFirstRow("SELECT `no`,turntime,term,turn0,turn1,turn2,turn3,turn4,turn5,turn6,turn7,turn8,turn9,turn10,turn11,turn12,turn13,turn14,turn15,turn16,turn17,turn18,turn19,turn20,turn21,turn22,turn23 FROM general WHERE `owner`=%s", $userID);
     if(!$me){
@@ -97,7 +97,7 @@ function myCommandList() {
     $month = $admin['month'];
     // 실행된 턴시간이면 +1
     $cutTurn = cutTurn($me['turntime'], $admin['turnterm']);
-    if($date <= $cutTurn) { $month++; }
+    if($date <= $cutTurn && $date < $admin['tuntime']) { $month++; }
 
     $totaldate = $me['turntime'];
 
diff --git a/hwe/func.php b/hwe/func.php
index b8c74338..37eb5792 100644
--- a/hwe/func.php
+++ b/hwe/func.php
@@ -1523,6 +1523,11 @@ function checkTurn() {
 
     $alllog = [];
 
+    if(date('Y-m-d H:i:s') < $gameStor->turntime){
+        //턴 시각 이전이면 아무것도 하지 않음
+        return true;
+    }
+
     // 잦은 갱신 금지 현재 5초당 1회
     if(!timeover()) { return; }
     // 현재 처리중이면 접근 불가
@@ -1557,7 +1562,12 @@ function checkTurn() {
         $db->update('plock', ['plock'=>1], true);
         return;
     }
+
+    $date = date('Y-m-d H:i:s');
+
     $gameStor->cacheAll();
+
+    
     // 1턴이상 갱신 없었으면 서버 지연
     //if(STEP_LOG) pushStepLog(date('Y-m-d H:i:s').', checkDelay');
     checkDelay();
@@ -1569,10 +1579,11 @@ function checkTurn() {
     CheckOverhead();
     //서버정보
 
-    $date = date('Y-m-d H:i:s');
+    
     // 최종 처리 월턴의 다음 월턴시간 구함
     $prevTurn = cutTurn($gameStor->turntime, $gameStor->turnterm);
     $nextTurn = addTurn($prevTurn, $gameStor->turnterm);
+    $computedPrevTurn = false;
     // 현재 턴 이전 월턴까지 모두처리.
     //최종 처리 이후 다음 월턴이 현재 시간보다 전이라면
     while($nextTurn <= $date) {
@@ -1678,12 +1689,16 @@ function checkTurn() {
         // 다음달로 넘김
         $prevTurn = $nextTurn;
         $nextTurn = addTurn($prevTurn, $gameStor->turnterm);
+        $computedPrevTurn = true;
     }
 
     //if(STEP_LOG) pushStepLog(date('Y-m-d H:i:s').', '.__LINE__);
         
     // 이시각 정각 시까지 업데이트 완료했음
-    $gameStor->turntime = $prevTurn;
+    if($computedPrevTurn){
+        $gameStor->turntime = $prevTurn;
+    }
+    
 
     // 그 시각 년도,월 저장
     list($gameStor->year, $gameStor->month) = turnDate($prevTurn);
@@ -2915,16 +2930,24 @@ function SabotageInjury($city, $type=0) {
     return $injuryCount;
 }
 
-function getRandTurn($term) {
+function getRandTurn($term, ?\DateTimeInterface $baseDateTime = null) {
+    if($baseDateTime === null){
+        $baseDateTime = new \DateTimeImmutable();
+    }
+    else if($baseDateTime instanceof \DateTime){
+        $baseDateTime = DateTimeImmutable::createFromMutable($baseDateTime);
+    }
     $randtime = rand(0, 60 * $term - 1);
-    $turntime = date('Y-m-d H:i:s', strtotime('now') + $randtime);
-
-    return $turntime;
+    return $baseDateTime->add(new \DateInterval('PT'.$randtime.'S'))->format('Y-m-d H:i:s');
 }
 
-function getRandTurn2($term) {
+function getRandTurn2($term, ?\DateTimeInterface $baseDateTime = null) {
+    if($baseDateTime === null){
+        $baseDateTime = new \DateTimeImmutable();
+    }
+    else if($baseDateTime instanceof \DateTime){
+        $baseDateTime = DateTimeImmutable::createFromMutable($baseDateTime);
+    }
     $randtime = rand(0, 60 * $term - 1);
-    $turntime = date('Y-m-d H:i:s', strtotime('now') - $randtime);
-
-    return $turntime;
+    return $baseDateTime->sub(new \DateInterval('PT'.$randtime.'S'))->format('Y-m-d H:i:s');
 }
diff --git a/hwe/func_gamerule.php b/hwe/func_gamerule.php
index 03132efc..ba16fdec 100644
--- a/hwe/func_gamerule.php
+++ b/hwe/func_gamerule.php
@@ -973,7 +973,7 @@ function updateNationState() {
     $connect=$db->get();
 
     $history = array();
-    $admin = $gameStor->getValues(['year', 'month', 'fiction', 'startyear', 'show_img_level', 'turnterm']);
+    $admin = $gameStor->getValues(['year', 'month', 'fiction', 'startyear', 'show_img_level', 'turnterm', 'turntime']);
 
     $query = "select nation,name,level,gennum,tech from nation";
     $nationresult = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
diff --git a/hwe/func_process_chief.php b/hwe/func_process_chief.php
index 3e9a9bc8..04125696 100644
--- a/hwe/func_process_chief.php
+++ b/hwe/func_process_chief.php
@@ -1894,7 +1894,7 @@ function process_76(&$general) {
 
     $date = substr($general['turntime'],11,5);
 
-    $admin = $gameStor->getValues(['startyear','year','month','develcost','npccount','turnterm']);
+    $admin = $gameStor->getValues(['startyear','year','month','develcost','npccount','turnterm','turntime']);
 
     $query = "select nation,supply from city where city='{$general['city']}'";
     $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
@@ -2070,7 +2070,7 @@ function process_76(&$general) {
             $affinity = rand() % 150 + 1;
             $name = "ⓖ의병장{$npcid}";
             $picture = 'default.jpg';
-            $turntime = getRandTurn($admin['turnterm']);
+            $turntime = getRandTurn($admin['turnterm'], new \DateTimeImmutable($admin['turntime']));
             $personal = rand() % 10;
             $bornyear = $admin['year'];
             $deadyear = $admin['year'] + 3;
diff --git a/hwe/func_process_personnel.php b/hwe/func_process_personnel.php
index 10c6e192..0eade9c9 100644
--- a/hwe/func_process_personnel.php
+++ b/hwe/func_process_personnel.php
@@ -290,7 +290,7 @@ function process_29(&$general) {
     $history = [];
     $date = substr($general['turntime'],11,5);
 
-    $admin = $gameStor->getValues(['startyear','year','month','develcost','npccount','turnterm','scenario','maxgeneral']);
+    $admin = $gameStor->getValues(['startyear','year','month','develcost','npccount','turnterm','scenario','maxgeneral', 'turntime']);
 
     $query = "select nation,name,level,gennum,scout from nation where nation='{$general['nation']}'";
     $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
@@ -490,7 +490,7 @@ function process_29(&$general) {
             $npccount = 10000 + $npcid;
             $affinity = rand() % 150 + 1;
             $picture = 'default.jpg';
-            $turntime = getRandTurn($admin['turnterm']);
+            $turntime = getRandTurn($admin['turnterm'], new \DateTimeImmutable($admin['turntime']));
             $personal = rand() % 10;
             $bornyear = $admin['year'];
             $deadyear = $admin['year'] + 3;
diff --git a/hwe/install.php b/hwe/install.php
index 4fcc5d39..b4edf004 100644
--- a/hwe/install.php
+++ b/hwe/install.php
@@ -225,6 +225,13 @@ if($session->userGrade < 5 && !$allowReset){
                         </div>
                     </div>
 
+                    <div class="form-group row">
+                        <label for="pre_reserve_open" class="col-sm-3 col-form-label">가오픈 예약</label>
+                        <div class="col-sm-9">
+                            <input type="text" class="form-control" name="pre_reserve_open" id="pre_reserve_open"  placeholder="YYYY-MM-DD hh:mm" value="" />
+                        </div>
+                    </div>
+
                     <div class="form-group row">
                         <div class="col-sm-3"></div>
                         <div class="col-sm-9">
diff --git a/hwe/j_autoreset.php b/hwe/j_autoreset.php
index 33b4f9c0..d1f3b872 100644
--- a/hwe/j_autoreset.php
+++ b/hwe/j_autoreset.php
@@ -88,7 +88,8 @@ $result = ResetHelper::buildScenario(
     $options['npcmode'],
     $options['show_img_level'],
     $options['tournament_trig'],
-    $options['join_mode']
+    $options['join_mode'],
+    $options['starttime']
 );
 
 $result['affected']=1;
diff --git a/hwe/j_install.php b/hwe/j_install.php
index c4a753d5..08e5901b 100644
--- a/hwe/j_install.php
+++ b/hwe/j_install.php
@@ -27,6 +27,20 @@ if($reserve_open && $reserve_open < date('Y-m-d H:i')){
     ]);
 }
 
+$pre_reserve_open = Util::getReq('pre_reserve_open');
+if($pre_reserve_open && !$reserve_open){
+    Json::die([
+        'result'=>false,
+        'reason'=>'가오픈 예약을 위해선 오픈 예약을 지정해야합니다.'
+    ]);
+}
+if($pre_reserve_open && $pre_reserve_open >= $reserve_open){
+    Json::die([
+        'result'=>false,
+        'reason'=>'가오픈 시간이 오픈 예약 시점보다 이전이어야 합니다.'
+    ]);
+}
+
 if($session->userGrade < 5 && !$allowReset){
     Json::die([
         'result'=>false,
@@ -114,22 +128,35 @@ if($reserve_open){
     }
 
     $scenarioObj = new Scenario($scenario, true);
+    $open_date = $reserve_open->format('Y-m-d H:i:s');
+
+    $reserveInfo = [
+        'turnterm'=>$turnterm,
+        'sync'=>$sync,
+        'scenario'=>$scenario,
+        'scenarioName'=>$scenarioObj->getTitle(),
+        'fiction'=>$fiction,
+        'extend'=>$extend,
+        'npcmode'=>$npcmode,
+        'show_img_level'=>$show_img_level,
+        'tournament_trig'=>$tournament_trig,
+        'gameConf'=>$scenarioObj->getGameConf(),
+        'join_mode'=>$join_mode,
+        'starttime'=>$open_date,
+    ];
+
+    
+    if($pre_reserve_open){
+        $pre_reserve_open = new \DateTime($pre_reserve_open);
+        $open_date = $pre_reserve_open->format('Y-m-d H:i:s');
+    }
+
+
+    
     $db->delete('reserved_open', true);
     $db->insert('reserved_open', [
-        'options'=>Json::encode([
-            'turnterm'=>$turnterm,
-            'sync'=>$sync,
-            'scenario'=>$scenario,
-            'scenarioName'=>$scenarioObj->getTitle(),
-            'fiction'=>$fiction,
-            'extend'=>$extend,
-            'npcmode'=>$npcmode,
-            'show_img_level'=>$show_img_level,
-            'tournament_trig'=>$tournament_trig,
-            'gameConf'=>$scenarioObj->getGameConf(),
-            'join_mode'=>$join_mode,
-        ]),
-        'date'=>$reserve_open->format('Y-m-d H:i:s')
+        'options'=>Json::encode($reserveInfo),
+        'date'=>$open_date
     ]);
     AppConf::getList()[DB::prefix()]->closeServer();
     Json::die([
@@ -147,5 +174,6 @@ Json::die(ResetHelper::buildScenario(
     $npcmode,
     $show_img_level,
     $tournament_trig,
-    $join_mode
+    $join_mode,
+    TimeUtil::DatetimeNow()
 ));
\ No newline at end of file
diff --git a/hwe/join_post.php b/hwe/join_post.php
index 2452534c..89bd02cc 100644
--- a/hwe/join_post.php
+++ b/hwe/join_post.php
@@ -68,7 +68,7 @@ if (!$member) {
 
 $db = DB::db();
 $gameStor = KVStorage::getStorage($db, 'game_env');
-$gameStor->cacheValues(['year','month','maxgeneral','scenario','show_img_level','turnterm','genius','npcmode']);
+$gameStor->cacheValues(['year','month','maxgeneral','scenario','show_img_level','turnterm','turntime','genius','npcmode']);
 ########## 동일 정보 존재여부 확인. ##########
 
 $gencount = $db->queryFirstField('SELECT count(`no`) FROM general WHERE npc<2');
@@ -153,7 +153,7 @@ $leader = $leader + $pleader;
 $power = $power + $ppower;
 $intel = $intel + $pintel;
 
-$admin = $gameStor->getValues(['scenario', 'turnterm', 'show_img_level', 'startyear', 'year']);
+$admin = $gameStor->getValues(['scenario', 'turnterm', 'turntime', 'show_img_level', 'startyear', 'year']);
 $relYear = Util::valueFit($admin['year'] - $admin['startyear'], 0);
 
 $age = 20 + ($pleader + $ppower + $pintel) * 2 - (mt_rand(0, 1));
@@ -187,7 +187,7 @@ else{
     $experience *= 0.8;
 }
 
-$turntime = getRandTurn($admin['turnterm']);
+$turntime = getRandTurn($admin['turnterm'], new \DateTimeImmutable($admin['turntime']));
 
 $lastconnect = date('Y-m-d H:i:s');
 if ($lastconnect >= $turntime) {
diff --git a/hwe/js/install.js b/hwe/js/install.js
index 893ff3fc..10034b89 100644
--- a/hwe/js/install.js
+++ b/hwe/js/install.js
@@ -155,6 +155,7 @@ function formSetup(){
                 show_img_level:$('#show_img_level input:radio:checked').val(),
                 tournament_trig:$('#tournament_trig input:radio:checked').val(),
                 reserve_open:$('#reserve_open').val(),
+                pre_reserve_open:$('#pre_reserve_open').val(),
                 join_mode:$('#join_mode input:radio:checked').val(),
             }
         }).then(function(result){
diff --git a/hwe/sammo/ResetHelper.php b/hwe/sammo/ResetHelper.php
index fd1582bc..e5e6d057 100644
--- a/hwe/sammo/ResetHelper.php
+++ b/hwe/sammo/ResetHelper.php
@@ -129,7 +129,8 @@ class ResetHelper{
         int $npcmode,
         int $show_img_level,
         int $tournament_trig,
-        string $join_mode
+        string $join_mode,
+        string $turntime
     ):array{
         //FIXME: 분리할 것
         if(120 % $turnterm != 0){
@@ -186,8 +187,6 @@ class ResetHelper{
             true
         );
 
-
-        $turntime = date('Y-m-d H:i:s');
         $time = substr($turntime, 11, 2);
         if($sync == 0) {
             // 현재 시간을 1월로 맞춤
diff --git a/hwe/sammo/Scenario/NPC.php b/hwe/sammo/Scenario/NPC.php
index c336bfd8..05f387d6 100644
--- a/hwe/sammo/Scenario/NPC.php
+++ b/hwe/sammo/Scenario/NPC.php
@@ -227,7 +227,7 @@ class NPC{
             $level = $nationID?1:0;
         }
 
-        $turntime = \sammo\getRandTurn($env['turnterm']);
+        $turntime = \sammo\getRandTurn($env['turnterm'], new \DateTimeImmutable($env['turntime']));
 
         $killturn = ($this->death - $year) * 12 + mt_rand(0, 11);