diff --git a/src/Database/PostUpdate.php b/src/Database/PostUpdate.php
index 99974a414..e4bfa710a 100644
--- a/src/Database/PostUpdate.php
+++ b/src/Database/PostUpdate.php
@@ -16,199 +16,199 @@ require_once 'include/dba.php';
  */
 class PostUpdate
 {
-    /**
-     * @brief Calls the post update functions
-     */
-    public static function update()
-    {
-        if (!self::update1194()) {
-            return;
-        }
-        if (!self::update1198()) {
-            return;
-        }
-        if (!self::update1206()) {
-            return;
-        }
-    }
+	/**
+	 * @brief Calls the post update functions
+	 */
+	public static function update()
+	{
+		if (!self::update1194()) {
+			return;
+		}
+		if (!self::update1198()) {
+			return;
+		}
+		if (!self::update1206()) {
+			return;
+		}
+	}
 
-    /**
-     * @brief Updates the "global" field in the item table
-     *
-     * @return bool "true" when the job is done
-     */
-    private static function update1194()
-    {
-        // Was the script completed?
-        if (Config::get("system", "post_update_version") >= 1194) {
-            return true;
-        }
+	/**
+	 * @brief Updates the "global" field in the item table
+	 *
+	 * @return bool "true" when the job is done
+	 */
+	private static function update1194()
+	{
+		// Was the script completed?
+		if (Config::get("system", "post_update_version") >= 1194) {
+			return true;
+		}
 
-        logger("Start", LOGGER_DEBUG);
+		logger("Start", LOGGER_DEBUG);
 
-        $end_id = Config::get("system", "post_update_1194_end");
-        if (!$end_id) {
-            $r = q("SELECT `id` FROM `item` WHERE `uid` != 0 ORDER BY `id` DESC LIMIT 1");
-            if ($r) {
-                Config::set("system", "post_update_1194_end", $r[0]["id"]);
-                $end_id = Config::get("system", "post_update_1194_end");
-            }
-        }
+		$end_id = Config::get("system", "post_update_1194_end");
+		if (!$end_id) {
+			$r = q("SELECT `id` FROM `item` WHERE `uid` != 0 ORDER BY `id` DESC LIMIT 1");
+			if ($r) {
+				Config::set("system", "post_update_1194_end", $r[0]["id"]);
+				$end_id = Config::get("system", "post_update_1194_end");
+			}
+		}
 
-        logger("End ID: ".$end_id, LOGGER_DEBUG);
+		logger("End ID: ".$end_id, LOGGER_DEBUG);
 
-        $start_id = Config::get("system", "post_update_1194_start");
+		$start_id = Config::get("system", "post_update_1194_start");
 
-        $query1 = "SELECT `item`.`id` FROM `item` ";
+		$query1 = "SELECT `item`.`id` FROM `item` ";
 
-        $query2 = "INNER JOIN `item` AS `shadow` ON `item`.`uri` = `shadow`.`uri` AND `shadow`.`uid` = 0 ";
+		$query2 = "INNER JOIN `item` AS `shadow` ON `item`.`uri` = `shadow`.`uri` AND `shadow`.`uid` = 0 ";
 
-        $query3 = "WHERE `item`.`uid` != 0 AND `item`.`id` >= %d AND `item`.`id` <= %d
-                AND `item`.`visible` AND NOT `item`.`private`
-                AND NOT `item`.`deleted` AND NOT `item`.`moderated`
-                AND `item`.`network` IN ('%s', '%s', '%s', '')
-                AND `item`.`allow_cid` = '' AND `item`.`allow_gid` = ''
-                AND `item`.`deny_cid` = '' AND `item`.`deny_gid` = ''
-                AND NOT `item`.`global`";
+		$query3 = "WHERE `item`.`uid` != 0 AND `item`.`id` >= %d AND `item`.`id` <= %d
+				AND `item`.`visible` AND NOT `item`.`private`
+				AND NOT `item`.`deleted` AND NOT `item`.`moderated`
+				AND `item`.`network` IN ('%s', '%s', '%s', '')
+				AND `item`.`allow_cid` = '' AND `item`.`allow_gid` = ''
+				AND `item`.`deny_cid` = '' AND `item`.`deny_gid` = ''
+				AND NOT `item`.`global`";
 
-        $r = q($query1.$query2.$query3."  ORDER BY `item`.`id` LIMIT 1",
-            intval($start_id), intval($end_id),
-            dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS));
-        if (!$r) {
-            Config::set("system", "post_update_version", 1194);
-            logger("Update is done", LOGGER_DEBUG);
-            return true;
-        } else {
-            Config::set("system", "post_update_1194_start", $r[0]["id"]);
-            $start_id = Config::get("system", "post_update_1194_start");
-        }
+		$r = q($query1.$query2.$query3."  ORDER BY `item`.`id` LIMIT 1",
+			intval($start_id), intval($end_id),
+			dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS));
+		if (!$r) {
+			Config::set("system", "post_update_version", 1194);
+			logger("Update is done", LOGGER_DEBUG);
+			return true;
+		} else {
+			Config::set("system", "post_update_1194_start", $r[0]["id"]);
+			$start_id = Config::get("system", "post_update_1194_start");
+		}
 
-        logger("Start ID: ".$start_id, LOGGER_DEBUG);
+		logger("Start ID: ".$start_id, LOGGER_DEBUG);
 
-        $r = q($query1.$query2.$query3."  ORDER BY `item`.`id` LIMIT 1000,1",
-            intval($start_id), intval($end_id),
-            dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS));
-        if ($r)
-            $pos_id = $r[0]["id"];
-        else
-            $pos_id = $end_id;
+		$r = q($query1.$query2.$query3."  ORDER BY `item`.`id` LIMIT 1000,1",
+			intval($start_id), intval($end_id),
+			dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS));
+		if ($r) {
+			$pos_id = $r[0]["id"];
+		} else {
+			$pos_id = $end_id;
+		}
+		logger("Progress: Start: ".$start_id." position: ".$pos_id." end: ".$end_id, LOGGER_DEBUG);
 
-        logger("Progress: Start: ".$start_id." position: ".$pos_id." end: ".$end_id, LOGGER_DEBUG);
+		q("UPDATE `item` ".$query2." SET `item`.`global` = 1 ".$query3,
+			intval($start_id), intval($pos_id),
+			dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS));
 
-        q("UPDATE `item` ".$query2." SET `item`.`global` = 1 ".$query3,
-            intval($start_id), intval($pos_id),
-            dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS));
+		logger("Done", LOGGER_DEBUG);
+	}
 
-        logger("Done", LOGGER_DEBUG);
-    }
+	/**
+	 * @brief set the author-id and owner-id in all item entries
+	 *
+	 * This job has to be started multiple times until all entries are set.
+	 * It isn't started in the update function since it would consume too much time and can be done in the background.
+	 *
+	 * @return bool "true" when the job is done
+	 */
+	private static function update1198()
+	{
+		// Was the script completed?
+		if (Config::get("system", "post_update_version") >= 1198) {
+			return true;
+		}
 
-    /**
-     * @brief set the author-id and owner-id in all item entries
-     *
-     * This job has to be started multiple times until all entries are set.
-     * It isn't started in the update function since it would consume too much time and can be done in the background.
-     *
-     * @return bool "true" when the job is done
-     */
-    private static function update1198()
-    {
-        // Was the script completed?
-        if (Config::get("system", "post_update_version") >= 1198) {
-            return true;
-        }
+		logger("Start", LOGGER_DEBUG);
 
-        logger("Start", LOGGER_DEBUG);
+		// Check if the first step is done (Setting "author-id" and "owner-id" in the item table)
+		$r = dba::select('item', ['author-link', 'owner-link', 'uid'], ['author-id' => 0, 'owner-id' => 0], ['limit' => 1000]);
+		if (!$r) {
+			// Are there unfinished entries in the thread table?
+			$r = q("SELECT COUNT(*) AS `total` FROM `thread`
+				INNER JOIN `item` ON `item`.`id` =`thread`.`iid`
+				WHERE `thread`.`author-id` = 0 AND `thread`.`owner-id` = 0 AND
+					(`thread`.`uid` IN (SELECT `uid` from `user`) OR `thread`.`uid` = 0)");
 
-        // Check if the first step is done (Setting "author-id" and "owner-id" in the item table)
-        $r = dba::select('item', ['author-link', 'owner-link', 'uid'], ['author-id' => 0, 'owner-id' => 0], ['limit' => 1000]);
-        if (!$r) {
-            // Are there unfinished entries in the thread table?
-            $r = q("SELECT COUNT(*) AS `total` FROM `thread`
-                INNER JOIN `item` ON `item`.`id` =`thread`.`iid`
-                WHERE `thread`.`author-id` = 0 AND `thread`.`owner-id` = 0 AND
-                    (`thread`.`uid` IN (SELECT `uid` from `user`) OR `thread`.`uid` = 0)");
+			if ($r && ($r[0]["total"] == 0)) {
+				Config::set("system", "post_update_version", 1198);
+				logger("Done", LOGGER_DEBUG);
+				return true;
+			}
 
-            if ($r && ($r[0]["total"] == 0)) {
-                Config::set("system", "post_update_version", 1198);
-                logger("Done", LOGGER_DEBUG);
-                return true;
-            }
+			// Update the thread table from the item table
+			$r = q("UPDATE `thread` INNER JOIN `item` ON `item`.`id`=`thread`.`iid`
+					SET `thread`.`author-id` = `item`.`author-id`,
+					`thread`.`owner-id` = `item`.`owner-id`
+				WHERE `thread`.`author-id` = 0 AND `thread`.`owner-id` = 0 AND
+					(`thread`.`uid` IN (SELECT `uid` from `user`) OR `thread`.`uid` = 0)");
 
-            // Update the thread table from the item table
-            $r = q("UPDATE `thread` INNER JOIN `item` ON `item`.`id`=`thread`.`iid`
-                    SET `thread`.`author-id` = `item`.`author-id`,
-                    `thread`.`owner-id` = `item`.`owner-id`
-                WHERE `thread`.`author-id` = 0 AND `thread`.`owner-id` = 0 AND
-                    (`thread`.`uid` IN (SELECT `uid` from `user`) OR `thread`.`uid` = 0)");
+			logger("Updated threads", LOGGER_DEBUG);
+			if (DBM::is_result($r)) {
+				Config::set("system", "post_update_version", 1198);
+				logger("Done", LOGGER_DEBUG);
+				return true;
+			}
+			return false;
+		}
 
-            logger("Updated threads", LOGGER_DEBUG);
-            if (DBM::is_result($r)) {
-                Config::set("system", "post_update_version", 1198);
-                logger("Done", LOGGER_DEBUG);
-                return true;
-            }
-            return false;
-        }
+		logger("Query done", LOGGER_DEBUG);
 
-        logger("Query done", LOGGER_DEBUG);
+		$item_arr = [];
+		foreach ($r as $item) {
+			$index = $item["author-link"]."-".$item["owner-link"]."-".$item["uid"];
+			$item_arr[$index] = ["author-link" => $item["author-link"],
+							"owner-link" => $item["owner-link"],
+							"uid" => $item["uid"]];
+		}
 
-        $item_arr = [];
-        foreach ($r as $item) {
-            $index = $item["author-link"]."-".$item["owner-link"]."-".$item["uid"];
-            $item_arr[$index] = ["author-link" => $item["author-link"],
-                            "owner-link" => $item["owner-link"],
-                            "uid" => $item["uid"]];
-        }
+		// Set the "author-id" and "owner-id" in the item table and add a new public contact entry if needed
+		foreach ($item_arr as $item) {
+			$author_id = Contact::getIdForURL($item["author-link"]);
+			$owner_id = Contact::getIdForURL($item["owner-link"]);
 
-        // Set the "author-id" and "owner-id" in the item table and add a new public contact entry if needed
-        foreach ($item_arr as $item) {
-            $author_id = Contact::getIdForURL($item["author-link"]);
-            $owner_id = Contact::getIdForURL($item["owner-link"]);
+			if ($author_id == 0) {
+				$author_id = -1;
+			}
+			if ($owner_id == 0) {
+				$owner_id = -1;
+			}
+			dba::update('item', ['author-id' => $author_id, 'owner-id' => $owner_id], ['uid' => $item['uid'], 'author-link' => $item['author-link'], 'owner-link' => $item['owner-link'], 'author-id' => 0, 'owner-id' => 0]);
+		}
 
-            if ($author_id == 0)
-                $author_id = -1;
+		logger("Updated items", LOGGER_DEBUG);
+		return false;
+	}
 
-            if ($owner_id == 0)
-                $owner_id = -1;
+	/**
+	 * @brief update the "last-item" field in the "self" contact
+	 *
+	 * This field avoids cost intensive calls in the admin panel and in "nodeinfo"
+	 *
+	 * @return bool "true" when the job is done
+	 */
+	private static function update1206()
+	{
+		// Was the script completed?
+		if (Config::get("system", "post_update_version") >= 1206) {
+			return true;
+		}
 
-            dba::update('item', ['author-id' => $author_id, 'owner-id' => $owner_id], ['uid' => $item['uid'], 'author-link' => $item['author-link'], 'owner-link' => $item['owner-link'], 'author-id' => 0, 'owner-id' => 0]);
-        }
+		logger("Start", LOGGER_DEBUG);
+		$r = q("SELECT `contact`.`id`, `contact`.`last-item`,
+			(SELECT MAX(`changed`) FROM `item` USE INDEX (`uid_wall_changed`) WHERE `wall` AND `uid` = `user`.`uid`) AS `lastitem_date`
+			FROM `user`
+			INNER JOIN `contact` ON `contact`.`uid` = `user`.`uid` AND `contact`.`self`");
 
-        logger("Updated items", LOGGER_DEBUG);
-        return false;
-    }
+		if (!DBM::is_result($r)) {
+			return false;
+		}
+		foreach ($r as $user) {
+			if (!empty($user["lastitem_date"]) && ($user["lastitem_date"] > $user["last-item"])) {
+				dba::update('contact', ['last-item' => $user['lastitem_date']], ['id' => $user['id']]);
+			}
+		}
 
-    /**
-     * @brief update the "last-item" field in the "self" contact
-     *
-     * This field avoids cost intensive calls in the admin panel and in "nodeinfo"
-     *
-     * @return bool "true" when the job is done
-     */
-    private static function update1206()
-    {
-        // Was the script completed?
-        if (Config::get("system", "post_update_version") >= 1206) {
-            return true;
-        }
-
-        logger("Start", LOGGER_DEBUG);
-        $r = q("SELECT `contact`.`id`, `contact`.`last-item`,
-            (SELECT MAX(`changed`) FROM `item` USE INDEX (`uid_wall_changed`) WHERE `wall` AND `uid` = `user`.`uid`) AS `lastitem_date`
-            FROM `user`
-            INNER JOIN `contact` ON `contact`.`uid` = `user`.`uid` AND `contact`.`self`");
-
-        if (!DBM::is_result($r)) {
-            return false;
-        }
-        foreach ($r as $user) {
-            if (!empty($user["lastitem_date"]) && ($user["lastitem_date"] > $user["last-item"])) {
-                dba::update('contact', ['last-item' => $user['lastitem_date']], ['id' => $user['id']]);
-            }
-        }
-
-        Config::set("system", "post_update_version", 1206);
-        logger("Done", LOGGER_DEBUG);
-        return true;
-    }
+		Config::set("system", "post_update_version", 1206);
+		logger("Done", LOGGER_DEBUG);
+		return true;
+	}
 }
diff --git a/src/Worker/OnePoll.php b/src/Worker/OnePoll.php
index aa3eabf57..e42612cd3 100644
--- a/src/Worker/OnePoll.php
+++ b/src/Worker/OnePoll.php
@@ -78,7 +78,7 @@ class OnePoll
 					$last_updated = $contact['last-item'];
 				}
 
-				$fields = ['last-item' => $last_updated, 'last-update' => $updated, 'success_update' => $updated];
+				$fields = ['last-item' => DateTimeFormat::utc($last_updated), 'last-update' => $updated, 'success_update' => $updated];
 				self::updateContact($contact, $fields);
 				Contact::unmarkForArchival($contact);
 			} else {