diff --git a/src/doeditdayschedule.php b/src/doeditdayschedule.php
new file mode 100644
index 0000000..0cf775b
--- /dev/null
+++ b/src/doeditdayschedule.php
@@ -0,0 +1,42 @@
+<?php
+require_once("core.php");
+security::checkType(security::ADMIN);
+
+if (!security::checkParams("POST", [
+  ["id", security::PARAM_NEMPTY]
+])) {
+  security::go("users.php?msg=unexpected");
+
+}
+$id = (int)$_POST["id"];
+
+$day = schedules::getDay($id);
+
+if ($day === false) {
+  security::go("users.php?msg=unexpected");
+}
+
+$dates = ["beginswork", "endswork", "beginsbreakfast", "endsbreakfast", "beginslunch", "endslunch"];
+$time = [];
+foreach ($dates as $date) {
+  if (isset($_POST[$date]) && !empty($_POST[$date])) {
+    if (!security::checkParam($_POST[$date], security::PARAM_ISTIME)) {
+      security::go("schedule.php?id=".$day["schedule"]."&msg=unexpected");
+    }
+    $time[$date] = schedules::time2sec($_POST[$date]);
+  } else {
+    $time[$date] = 0;
+  }
+}
+
+$status = schedules::checkAddDayGeneric($time["beginswork"], $time["endswork"], $time["beginsbreakfast"], $time["endsbreakfast"], $time["beginslunch"], $time["endslunch"]);
+
+if ($status != 0) {
+  security::go("schedule.php?id=".$day["schedule"]."&msg=errorcheck".(int)$status);
+}
+
+if (schedules::editDay($id, $time["beginswork"], $time["endswork"], $time["beginsbreakfast"], $time["endsbreakfast"], $time["beginslunch"], $time["endslunch"])) {
+  security::go("schedule.php?id=".$day["schedule"]."&msg=modified");
+} else {
+  security::go("schedule.php?id=".$day["schedule"]."&msg=unexpected");
+}