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diff --git a/include/datetime/planner.h b/include/datetime/planner.h
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+/*
+ * Copyright 2013 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3, as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranties of
+ * MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *   Charles Kerr <charles.kerr@canonical.com>
+ */
+
+#ifndef INDICATOR_DATETIME_PLANNER_H
+#define INDICATOR_DATETIME_PLANNER_H
+
+#include <datetime/appointment.h>
+#include <datetime/date-time.h>
+
+#include <core/property.h>
+
+#include <vector>
+
+namespace unity {
+namespace indicator {
+namespace datetime {
+
+/**
+ * \brief Simple appointment book
+ *
+ * @see EdsPlanner
+ * @see State
+ */
+class Planner
+{
+public:
+    virtual ~Planner() =default;
+
+    /**
+     * \brief Timestamp used to determine the appointments in the `upcoming' and `thisMonth' properties.
+     * Setting this value will cause the planner to re-query its backend and
+     * update the `upcoming' and `thisMonth' properties.
+     */
+    core::Property<DateTime> time;
+
+    /**
+     * \brief The next few appointments that follow the time specified in the time property.
+     */
+    core::Property<std::vector<Appointment>> upcoming;
+
+    /**
+     * \brief The appointments that occur in the same month as the time property
+     */
+    core::Property<std::vector<Appointment>> thisMonth;
+
+protected:
+    Planner() =default;
+
+private:
+
+    // disable copying
+    Planner(const Planner&) =delete;
+    Planner& operator=(const Planner&) =delete;
+};
+
+} // namespace datetime
+} // namespace indicator
+} // namespace unity
+
+#endif // INDICATOR_DATETIME_PLANNER_H