diff --git a/calendar/generate_calendar.php b/calendar/generate_calendar.php
new file mode 100755
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--- /dev/null
+++ b/calendar/generate_calendar.php
@@ -0,0 +1,121 @@
+<?php
+
+/*
+	File: $Id$
+	
+	This script generates a LaTeX include file that contains macros specifying
+	the date ranges for every week of the three main teaching periods through
+	the year (i.e., summer school, first semester, second semester). Simply set
+	the configuration as outlined below and run the script, saving the output
+	in a suitable location (ideally only once for all papers, perhaps in
+	$ALL_PAPERS_ROOT?).
+*/
+
+// LaTeX macro names can't include numbers, so we have to convert them to words.
+include( "Numbers/Words.php" );
+
+/*
+	Teaching period configuration. It's easily extensible to a new teaching
+	period simply by adding a new specification for that period. The key should
+	be valid as a LaTeX macro name (i.e., no spaces, no digits, no punctuation).
+	The components of each period specification are:
+	
+		start_date:	The date of the first day of the first week of the period.
+		
+		num_weeks:	The total number of weeks in the period, /including/ any
+					breaks (e.g., 13 teaching weeks plus 1 week mid-semester
+					break = 14 weeks).
+		
+		break_week:	The week number that the break (if any) falls in, relative
+					to num_weeks, so if the break week falls after the sixth
+					teaching week, then set this to 7. The numbering of teaching
+					weeks will skip the break week regardless. If there is no
+					break in the period, then set this to a number larger than
+					num_weeks.
+					
+					Note that this currently only supports a single, one week
+					break per period. Generalising the configuration to
+					multiple/longer breaks probably isn't that difficult if
+					needed (a list of week numbers instead of a single value
+					should cater for all cases). Setting up the LaTeX macros
+					and teaching week numbering could be tricky, though.
+*/
+$periods = array(
+	'SummerSchool' => array(
+		'start_date' => new DateTime( "2012-01-09" ),
+		'num_weeks'  => 6,
+		'break_week' => 9999,
+	),
+	"SemesterOne" => array(
+		'start_date' => new DateTime( "2012-02-27" ),
+		'num_weeks'  => 14,
+		'break_week' => 7,
+	),
+	"SemesterTwo" => array(
+		'start_date' => new DateTime( "2012-07-09" ),
+		'num_weeks'  => 14,
+		'break_week' => 8,
+	),
+);
+
+// A couple of handy date intervals: four days to the end of the current week,
+// and seven days to the start of next week.
+$plus_four_days = new DateInterval( 'P4D' );
+$plus_seven_days = new DateInterval( 'P7D' );
+
+$numwords = new Numbers_Words();
+
+foreach ( $periods as $period_name => $period_data )
+{
+	$week_start = clone( $period_data['start_date'] );
+	
+	for ( $week = 1; $week <= $period_data['num_weeks']; $week++ )
+	{
+		$week_end = clone( $week_start );
+		$week_end->add( $plus_four_days );
+		
+		// If the week start and end dates are in the same month, we only
+		// need to output the month name once.
+		$same_month = $week_start->format( 'n' ) == $week_end->format( 'n' );
+		
+		// Handle break weeks.
+		if ( $week == $period_data['break_week'] )
+		{
+			printf(	"\\newcommand{\\%sMidSemesterBreak}{%s--%s}\n",
+				$period_name,
+				( $same_month ) ? $week_start->format( 'j' ) : $week_start->format( 'j M' ),
+				$week_end->format( 'j M' )
+			);
+		} // if break week
+		else
+		{
+			// If we've passed the break week, then we need to subtract one from
+			// the week count to get the correct teaching week number.
+			$week_number = ( $week > $period_data['break_week'] ) ? $week - 1 : $week;
+			
+			if( $same_month )
+			{
+				printf(	"\\newcommand{\\%sWeek%s}{%s--%s \\\\ %s}\n",
+					$period_name,
+					ucfirst( $numwords->toWords( $week_number ) ),
+					$week_start->format( 'j' ),
+					$week_end->format( 'j' ),
+					$week_end->format( 'M' )
+				);
+			} // if same month
+			else
+			{
+				printf(	"\\newcommand{\\%sWeek%s}{%s \\\\ --%s}\n",
+					$period_name,
+					ucfirst( $numwords->toWords( $week_number ) ),
+					$week_start->format( 'j M' ),
+					$week_end->format( 'j M' )
+				);
+			} // else different months
+		} // else normal teaching week
+		
+		$week_start->add( $plus_seven_days );
+	} // for each week
+} // foreach teaching period
+
+?>