diff --git a/calendar/generate_lecturedates.php b/calendar/generate_lecturedates.php
new file mode 100755
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+++ b/calendar/generate_lecturedates.php
@@ -0,0 +1,102 @@
+<?php
+
+/*
+	File: $Id$
+	
+	This script generates a LaTeX include file that contains macros specifying
+	the dates for every lecture in a teaching period. It doesn't generate dates
+	for multiple papers; rather, you should generate a separate include file for
+	each paper individually. The main reason for this approach is that paper
+	codes include digits, which you can't include in LaTeX macro names. We
+	therefore generate generic macros (\DateLectureOne, \DateLectureTwo, etc.),
+	that don't include any paper information. The configuration for a specific
+	paper is read from a separate file.
+	
+	The output of the script should be placed at the root of the tree for the
+	target paper, alongside the paper_init.tex file.
+*/
+
+// LaTeX macro names can't include numbers, so we have to convert them to words.
+include( 'Numbers/Words.php' );
+
+/*
+	Configuration requires the following variables to be specified in the file
+	paper_config.php:
+	
+	$start_dates
+		A list of starting dates for contiguous teaching weeks, e.g., the six
+		weeks up to mid-semester break, and the seven weeks after. We pretty
+		much ignore breaks, etc., otherwise; all we want to know is what the
+		date(s) are for the lecture(s) in each week. It also means that we
+		don't have to do any thing clever for things like full year papers that
+		span more than one semester.
+		
+		Example (INFO 405 2012, full year with one break in each semester):
+		
+			$start_dates => array(
+				new DateTime( "2012-02-27" ),
+				new DateTime( "2012-04-02" ),
+				new DateTime( "2012-07-09" ),
+				new DateTime( "2012-09-03" ),
+			);
+	
+	$period_lengths
+		A list of integers representing the length in weeks of each period
+		specifed in $start_dates. Both $start_dates and $period_lengths must
+		therefore have the same length!
+		
+		Example (INFO 405 2012):
+		
+			$period_lengths => array( 6, 7, 7, 6 );
+	
+	$class_offsets:
+		For each class in a week, specify the offset interval from the start
+		of week (Monday). Thus, a class on Monday will be 'P0D', Wednesday
+		'P2D', Friday 'P4D', etc. Include as many entries in the list as there
+		are classes per week (e.g., two lectures => two entries).
+		
+		Example (INFO 405 2012, one lecture per week, on Monday):
+		
+			$class_offsets => array(
+				new DateInterval( 'P0D' ),
+			);
+*/
+include( 'lecturedates_config.php' );
+
+$numwords = new Numbers_Words();
+
+// A handy date interval: seven days to the start of next week.
+$plus_seven_days = new DateInterval( 'P7D' );
+
+$week_num = 1;
+
+for ( $period = 0; $period < count( $start_dates ); $period++ )
+{
+	$period_start = $start_dates[$period];
+	$week_start = clone( $start_dates[$period] );
+
+	for ( $week = 0; $week < $period_lengths[$period]; $week++ )
+	{
+		$lecture_num = 1;
+		
+		foreach ( $class_offsets as $class )
+		{
+			$class_date = clone( $week_start );
+			$class_date->add( $class );
+			
+			// Note that the toWords() method generates hyphens in the result,
+			// so we need to strip these out for LaTeX to be happy. Larger
+			// numbers may well include spaces and commas, but it's pretty
+			// unlikely that we'll ever get that high!
+			printf( "\\newcommand{\\DateWeek%sLecture%s}{%s}\n",
+				ucfirst( str_replace( '-', '', $numwords->toWords( $week_num ) ) ),
+				ucfirst( str_replace( '-', '', $numwords->toWords( $lecture_num ) ) ),
+				$class_date->format( 'j F' )
+			);
+			$lecture_num++;
+		} // for every class in week
+		
+		$week_start->add( $plus_seven_days );
+		$week_num++;
+	} // for every week in period
+} // for every period