diff --git a/includes/cli.php b/includes/cli.php
index a894777..ba1bfa9 100644
--- a/includes/cli.php
+++ b/includes/cli.php
@@ -2,6 +2,7 @@
 
 use EesyPHP\Check;
 use EesyPHP\Cli;
+use EesyPHP\Date;
 use EesyPHP\I18n;
 use EesyPHP\Log;
 
@@ -22,7 +23,7 @@ function print_item_info($item) {
   printf(_("Item #%s:\n"), $item['id']);
   printf("\t"._("ID: %s")."\n", $item['id']);
   printf("\t"._("Name: '%s'")."\n", $item['name']);
-  printf("\t"._("Date: %s")."\n", format_time($item['date']));
+  printf("\t"._("Date: %s")."\n", Date :: format($item['date']));
   printf(
     "\t"._("Description: %s")."\n",
     ($item['description']?"'".$item['description']."'":_("Not set"))
@@ -99,7 +100,7 @@ function cli_list($command_args) {
       array(
         $info['id'],
         $info['name'],
-        format_time($info['date']),
+        Date :: format($info['date']),
         $info['status'],
         ($info['description']?$info['description']:''),
       )
@@ -240,7 +241,7 @@ function cli_cron($command_args) {
   Log :: debug("cli_cron(): item max age = $item_max_age day(s)");
 
   $limit = time() - ($item_max_age * 86400);
-  Log :: debug("Handle items expiration with creation date limit ".format_time($limit).".");
+  Log :: debug("Handle items expiration with creation date limit ".Date :: format($limit).".");
 
   $items = search_items(array('all' => true));
   $error = false;
@@ -248,24 +249,24 @@ function cli_cron($command_args) {
     if ($item['date'] < $limit) {
       if ($just_try) {
         Log :: debug('Just-try mode: do not really delete item #%s (%s, creation date: %s)',
-          $item['id'], $item['name'], format_time($item['date'])
+          $item['id'], $item['name'], Date :: format($item['date'])
         );
       }
       else if (delete_item($item['id'])) {
         Log :: info('Item #%s (%s) deleted (creation date: %s)',
-          $item['id'], $item['name'], format_time($item['date'])
+          $item['id'], $item['name'], Date :: format($item['date'])
         );
       }
       else {
         Log :: error('Fail to delete item "%s" (%s, creation date: %s)',
-          $item['id'], $item['name'], format_time($item['date'])
+          $item['id'], $item['name'], Date :: format($item['date'])
         );
         $error = true;
       }
     }
     else {
       Log :: debug('Item "%s" (%s) still valid (creation date: %s)',
-        $item['id'], $item['name'], format_time($item['date'])
+        $item['id'], $item['name'], Date :: format($item['date'])
       );
     }
   }
diff --git a/includes/functions.php b/includes/functions.php
index fbfc42a..9bbf85b 100644
--- a/includes/functions.php
+++ b/includes/functions.php
@@ -88,33 +88,6 @@ function handle_item_post_data(&$info, $enabled_fields=null, $required_fields=nu
 /*
  * Parser/formater values helpers
  */
-$_date_format = "%d/%m/%Y";
-$_date_time_format = "%d/%m/%Y %H:%M:%S";
-function format_time($time, $with_time=true) {
-  global $_date_format, $_date_time_format;
-  if ($with_time)
-    return strftime($_date_time_format, $time);
-  return strftime($_date_format, $time);
-}
-
-function parse_date($date, $with_time=true) {
-  global $_date_format, $_date_time_format;
-  if ($with_time)
-    $ptime = strptime($date, $_date_time_format);
-  else
-    $ptime = strptime($date, $_date_format);
-  if(is_array($ptime)) {
-    return mktime(
-      $ptime['tm_hour'],
-      $ptime['tm_min'],
-      $ptime['tm_sec'],
-      $ptime['tm_mon']+1,
-      $ptime['tm_mday'],
-      $ptime['tm_year']+1900
-    );
-  }
-  return false;
-}
 
 function format_size($size, $digit=False) {
   if (!$digit && $digit!==0) $digit=2;
diff --git a/includes/templates.php b/includes/templates.php
index bcacba7..766658a 100644
--- a/includes/templates.php
+++ b/includes/templates.php
@@ -1,5 +1,6 @@
 <?php
 
+use EesyPHP\Date;
 use EesyPHP\Hook;
 use EesyPHP\Log;
 use EesyPHP\Tpl;
@@ -74,7 +75,7 @@ function smarty_item_status($params) {
 Tpl :: register_function('item_status','smarty_item_status');
 
 function smarty_format_time($params) {
-  echo format_time($params['time'], (!isset($params['with_time']) || (bool)$params['with_time']));
+  echo Date :: format($params['time'], (!isset($params['with_time']) || (bool)$params['with_time']));
 }
 Tpl :: register_function('format_time','smarty_format_time');
 
diff --git a/src/Date.php b/src/Date.php
new file mode 100644
index 0000000..9da0db2
--- /dev/null
+++ b/src/Date.php
@@ -0,0 +1,56 @@
+<?php
+
+namespace EesyPHP;
+
+class Date {
+
+  /**
+   * The date format
+   * @see strftime()
+   * @var string
+   */
+  public static string $date_format = "%d/%m/%Y";
+
+  /**
+   * The datetime format
+   * @see strftime()
+   * @var string
+   */
+  public static string $date_time_format = "%d/%m/%Y %H:%M:%S";
+
+  /**
+   * Format a timestamp as date/datetime string
+   * @param int $time The timestamp to format
+   * @param bool $with_time If true, include time in formated string
+   *                        (optional, default: true)
+   */
+  public static function format($time, $with_time=true) {
+    if ($with_time)
+      return strftime(self :: $date_time_format, $time);
+    return strftime(self :: $date_format, $time);
+  }
+
+  /**
+   * Parse a date/datetime string as timestamp
+   * @param string $date The date string to parse
+   * @param bool $with_time If true, consider the date string included time
+   *                        (optional, default: true)
+   */
+  public static function parse($date, $with_time=true) {
+    if ($with_time)
+      $ptime = strptime($date, self :: $date_time_format);
+    else
+      $ptime = strptime($date, self :: $date_format);
+    if(is_array($ptime)) {
+      return mktime(
+        $ptime['tm_hour'],
+        $ptime['tm_min'],
+        $ptime['tm_sec'],
+        $ptime['tm_mon']+1,
+        $ptime['tm_mday'],
+        $ptime['tm_year']+1900
+      );
+    }
+    return false;
+  }
+}
diff --git a/src/functions.php b/src/functions.php
index 3b8f2fe..8c1aedf 100644
--- a/src/functions.php
+++ b/src/functions.php
@@ -7,34 +7,6 @@ use EesyPHP\Log;
 /*
  * Parser/formater values helpers
  */
-$_date_format = "%d/%m/%Y";
-$_date_time_format = "%d/%m/%Y %H:%M:%S";
-function format_time($time, $with_time=true) {
-  global $_date_format, $_date_time_format;
-  if ($with_time)
-    return strftime($_date_time_format, $time);
-  return strftime($_date_format, $time);
-}
-
-function parse_date($date, $with_time=true) {
-  global $_date_format, $_date_time_format;
-  if ($with_time)
-    $ptime = strptime($date, $_date_time_format);
-  else
-    $ptime = strptime($date, $_date_format);
-  if(is_array($ptime)) {
-    return mktime(
-      $ptime['tm_hour'],
-      $ptime['tm_min'],
-      $ptime['tm_sec'],
-      $ptime['tm_mon']+1,
-      $ptime['tm_mday'],
-      $ptime['tm_year']+1900
-    );
-  }
-  return false;
-}
-
 function format_size($size, $digit=False) {
   if (!$digit && $digit!==0) $digit=2;
   if ($size>=1099511627776)