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diff --git a/vmime-master/src/vmime/utility/datetimeUtils.hpp b/vmime-master/src/vmime/utility/datetimeUtils.hpp
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+//
+// VMime library (http://www.vmime.org)
+// Copyright (C) 2002 Vincent Richard <vincent@vmime.org>
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 3 of
+// the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY 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, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// Linking this library statically or dynamically with other modules is making
+// a combined work based on this library.  Thus, the terms and conditions of
+// the GNU General Public License cover the whole combination.
+//
+
+#ifndef VMIME_DATETIMEUTILS_HPP_INCLUDED
+#define VMIME_DATETIMEUTILS_HPP_INCLUDED
+
+
+#include "vmime/dateTime.hpp"
+
+
+namespace vmime {
+namespace utility {
+
+
+/** Miscellaneous functions related to date/time.
+  */
+class VMIME_EXPORT datetimeUtils {
+
+public:
+
+	/** Test whether the specified year is a leap year.
+	  *
+	  * @param year year in 4-digit format
+	  * @return true if year is a leap year, false otherwise
+	  */
+	static bool isLeapYear(const int year);
+
+	/** Return the number of days in the specified month.
+	  *
+	  * @param year year in 4-digit format (this is needed to check
+	  * for leap years)
+	  * @param month month, January is 1, December is 12 (see datetime::Months enum)
+	  * @return the number of days in the month
+	  */
+	static int getDaysInMonth(const int year, const int month);
+
+	/** Convert the specified date/time to UT (GMT).
+	  *
+	  * @param date date/time to convert
+	  * @return GMT date/time
+	  */
+	static const datetime toUniversalTime(const datetime& date);
+
+	/** Convert the specified date/time to the specified time zone.
+	  *
+	  * @param date date/time to convert
+	  * @param zone local zone to convert to (see datetime::TimeZones enum)
+	  * @return local time and date
+	  */
+	static const datetime toLocalTime(const datetime& date, const int zone);
+
+	/** Return the day of the week from the specified date.
+	  *
+	  * @param year year in 4-digit format
+	  * @param month month (1-12), January is 1, December is 12 (see datetime::Months enum)
+	  * @param day month day (1-31)
+	  * @return the day of the week, Sunday is 0, Monday is 1 (see datetime::DaysOfWeek enum)
+	  */
+	static int getDayOfWeek(const int year, const int month, const int day);
+
+	/** Return the week number in the year (ISO 8601).
+	  *
+	  * @param year year in 4-digit format
+	  * @param month month (1-12), January is 1, December is 12 (see datetime::Months enum)
+	  * @param day month day (1-31)
+	  * @param iso if TRUE, use ISO week-numbering year (default is to use calendar year).
+	  * For more information, read here: http://en.wikipedia.org/wiki/ISO_8601#Week_dates
+	  * @return the week number (1 is the first week of the year)
+	  */
+	static int getWeekOfYear(const int year, const int month, const int day, const bool iso = false);
+};
+
+
+} // utility
+} // vmime
+
+
+#endif // VMIME_DATETIMEUTILS_HPP_INCLUDED