diff --git a/README.md b/README.md
index a3ea40f..a8859bb 100644
--- a/README.md
+++ b/README.md
@@ -9,4 +9,3 @@
 
 ## Notes
 - As I've been able to see when using this app around Barcelona, the schedules provided by TMB are a very vague approximation of the departure times for all lines except for the automated lines. In the case of the automated lines, the timing is precise within a second.
-- As of now, the timezone set in the server must be Europe/Madrid (because of the way sqlite3 treats timezones). Otherwise, the app will not work properly.
diff --git a/config.default.php b/config.default.php
index a53ef00..ac64fd1 100644
--- a/config.default.php
+++ b/config.default.php
@@ -1,8 +1,13 @@
 <?php
 $conf = [];
 
+// TMB API credentials
 $conf["tmbApi"] = [];
 $conf["tmbApi"]["appId"] = "";
 $conf["tmbApi"]["appKey"] = "";
 
+// Location where the site will save the database file
 $conf["databaseFile"] = "";
+
+// Timezone of the subway system
+$conf["timezone"] = "Europe/Madrid";
diff --git a/core.php b/core.php
index 89c2ec0..05c9411 100644
--- a/core.php
+++ b/core.php
@@ -12,5 +12,5 @@
 require_once(__DIR__."/config.php");
 
 // Setting timezone and locale accordingly
-date_default_timezone_set("Europe/Madrid");
+if (isset($conf["timezone"])) date_default_timezone_set($conf["timezone"]);
 setlocale(LC_TIME, 'es_ES.UTF-8', 'es_ES', 'es');
diff --git a/inc/gtfs.php b/inc/gtfs.php
index 38af838..ae33d50 100644
--- a/inc/gtfs.php
+++ b/inc/gtfs.php
@@ -94,20 +94,26 @@
 
   const TIME_LIMIT = 30;
   function getStopTimes($stop, $timeLimit = self::TIME_LIMIT) {
-    $stops = $this->getPlatforms($stop);
+    $platforms = $this->getPlatforms($stop);
 
     $values = [];
-    foreach ($stops as $s) {
-      $values[] = $s["stop_id"]; // Stops
+    foreach ($platforms as $i => $s) {
+      $values[":stop".(int)$i] = $s["stop_id"]; // Stops
     }
 
-    $rdow = (int)date("w");
+    $stopParameters = array_keys($values);
+
+    $rdow = (int)(new DateTime("now"))->format("w");
     $dow = self::$dow[$rdow]; // Today's day of week
     $dow2 = self::$dow[($rdow + 1) % 7]; // Tomorrow's day of week
 
-    if (!count($stops)) return [];
+    $values[":today"] = (int)(new DateTime("now"))->format("Ymd"); // Today's date
+    $values[":tomorrow"] = (int)(new DateTime("tomorrow"))->format("Ymd"); // Tomorrow's date
+    $values[":now"] = (new DateTime("now"))->format("H:i:s");
 
-    $sql = "SELECT st.*, t.*, r.*, c.*, cd.*, strftime('%Y%m%d', 'now', 'localtime') as today, strftime('%Y%m%d', 'now', 'localtime', '1 day') as tomorrow, time('now', 'localtime') as now
+    if (!count($platforms)) return [];
+
+    $sql = "SELECT st.*, t.*, r.*, c.*, cd.*
       FROM stop_times st
       INNER JOIN trips t
         ON st.trip_id = t.trip_id
@@ -118,7 +124,7 @@
       LEFT JOIN calendar_dates cd
         ON t.service_id = cd.service_id
       WHERE
-      st.stop_id IN (".implode(", ", array_fill(0, count($stops), "?")).") AND
+      st.stop_id IN (".implode(", ", $stopParameters).") AND
       (
         cd.service_id IS NULL OR
         cd.exception_type = ".(int)Gtfs\CalendarDate\ExceptionType::ADDED."
@@ -127,49 +133,49 @@
         (
           (
             (
-              time(now) < time('00:00:00', '-".(int)$timeLimit." minutes') AND
-              st.departure_time BETWEEN time(now) AND time(now, '".(int)$timeLimit." minutes')
+              time(:now) < time('00:00:00', '-".(int)$timeLimit." minutes') AND
+              st.departure_time BETWEEN time(:now) AND time(:now, '".(int)$timeLimit." minutes')
             ) OR
             (
-              time(now) >= time('00:00:00', '-".(int)$timeLimit." minutes') AND
-              st.departure_time BETWEEN time(now) AND strftime('24:%M:%S', now, '".(int)$timeLimit." minutes')
+              time(:now) >= time('00:00:00', '-".(int)$timeLimit." minutes') AND
+              st.departure_time BETWEEN time(:now) AND strftime('24:%M:%S', :now, '".(int)$timeLimit." minutes')
             )
           ) AND
           (
             c.service_id IS NULL OR
             (
-              c.start_date <= today AND
-              c.end_date >= today AND
+              c.start_date <= :today AND
+              c.end_date >= :today AND
               c.$dow = ".(int)Gtfs\Calendar\CalendarDay::AVAILABLE."
             )
           ) AND
           (
             cd.service_id IS NULL OR
-            cd.date = today
+            cd.date = :today
           )
         ) OR
         (
           (
             (
-              time(now) < time('00:00:00', '-".(int)$timeLimit." minutes') AND
-              st.departure_time BETWEEN ((strftime('%H', now) + 24) || strftime(':%M:%S', now)) AND ((strftime('%H', now, '".(int)$timeLimit." minutes') + 24) || strftime(':%M:%S', now, '".(int)$timeLimit." minutes'))
+              time(:now) < time('00:00:00', '-".(int)$timeLimit." minutes') AND
+              st.departure_time BETWEEN ((strftime('%H', :now) + 24) || strftime(':%M:%S', :now)) AND ((strftime('%H', :now, '".(int)$timeLimit." minutes') + 24) || strftime(':%M:%S', :now, '".(int)$timeLimit." minutes'))
             ) OR
             (
-              time(now) >= time('00:00:00', '-".(int)$timeLimit." minutes') AND
-              st.departure_time BETWEEN time(now) AND strftime('24:%M:%S', now, '".(int)$timeLimit." minutes')
+              time(:now) >= time('00:00:00', '-".(int)$timeLimit." minutes') AND
+              st.departure_time BETWEEN time(:now) AND strftime('24:%M:%S', :now, '".(int)$timeLimit." minutes')
             )
           ) AND
           (
             c.service_id IS NULL OR
             (
-              c.start_date <= tomorrow AND
-              c.end_date >= tomorrow AND
+              c.start_date <= :tomorrow AND
+              c.end_date >= :tomorrow AND
               c.$dow2 = ".(int)Gtfs\Calendar\CalendarDay::AVAILABLE."
             )
           ) AND
           (
             cd.service_id IS NULL OR
-            cd.date = tomorrow
+            cd.date = :tomorrow
           )
         )
       )