Source for file ChronologyConstants.class.php

<?php
/**
 * @since 5/2/05
 * @package harmoni.primitives.chronology
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: ChronologyConstants.class.php,v 1.2 2006/06/26 12:55:07 adamfranco Exp $
 *
 * @link http://harmoni.sourceforge.net/
 * @author Adam Franco <adam AT adamfranco DOT com> <afranco AT middlebury DOT edu>
 */ 
 
/**
 * ChronologyConstants is a SharedPool for the constants used by the
 * Kernel-Chronology classes.
 *
 * 
 * @since 5/2/05
 * @package harmoni.primitives.chronology
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: ChronologyConstants.class.php,v 1.2 2006/06/26 12:55:07 adamfranco Exp $
 *
 * @link http://harmoni.sourceforge.net/
 * @author Adam Franco <adam AT adamfranco DOT com> <afranco AT middlebury DOT edu>
 * @static
 */
class ChronologyConstants {
        
    /**
     * Julian day number of 1 Jan 1901
     * 
     * @return integer 
     * @access public
     * @since 5/2/05
     * @static
     */
    function SqueakEpoch () {
        return 2415386;
    }
    
    /**
     * Number of seconds in a day
     * 
     * @return integer 
     * @access public
     * @since 5/2/05
     * @static
     */
    function SecondsInDay () {
        return 86400;
    }
    
    /**
     * Number of seconds in an hour
     * 
     * @return integer 
     * @access public
     * @since 5/2/05
     * @static
     */
    function SecondsInHour () {
        return 3600;
    }
    
    /**
     * Number of seconds in a minute
     * 
     * @return integer 
     * @access public
     * @since 5/2/05
     * @static
     */
    function SecondsInMinute () {
        return 60;
    }
    
    /**
     * Nanoseconds in a second
     * 
     * @return integer 
     * @access public
     * @since 5/2/05
     * @static
     */
    function NanosInSecond () {
        return pow (10, 9);
    }
    
    /**
     * Nanoseconds in a millisecond
     * 
     * @return integer 
     * @access public
     * @since 5/2/05
     * @static
     */
    function NanosInMillisecond () {
        return pow (10, 6);
    }
    
    /**
     * Names of days of the week.
     * 
     * @return array 
     * @access public
     * @since 5/2/05
     * @static
     */
    function DayNames () {
        return array (1 => 'Sunday', 2 => 'Monday', 3 => 'Tuesday', 4 => 'Wednesday',
            5 => 'Thursday', 6 => 'Friday', 7 => 'Saturday');
    }
    
    /**
     * Names of months.
     * 
     * @return array 
     * @access public
     * @since 5/2/05
     * @static
     */
    function MonthNames () {
        return array (1 => 'January', 2 => 'February', 3 => 'March', 4 => 'April', 
            5 => 'May', 6 => 'June', 7 => 'July', 8 => 'August', 9 => 'September', 
            10 => 'October', 11 => 'November', 12 => 'December');
    }
    
    /**
     * Names number of days in each month.
     * 
     * @return array 
     * @access public
     * @since 5/2/05
     * @static
     */
    function DaysInMonth () {
        return array (1 => 31, 2 => 28, 3 => 31, 4 => 30, 5 => 31, 6 => 30, 
            7 => 31, 8 => 31, 9 => 30, 10 => 31, 11 => 30, 12 => 31);
    }
}
 
?>