$time)
{
$next_spring = $nearest_spring_ahead;
}
else {
$next_spring = strtotime("Second Sunday March 0 +1 year", $time );
}
if (strtotime("+1 day", $nearest_fall_back) > $time) {
$next_fall = $nearest_fall_back;
}
else
{
$next_fall = strtotime("First Sunday November 0 +1 year", $time);
}
// if next upcoming dst is spring set show_spring to true otherwise false
if ($next_fall > $next_spring)
$show_spring = 1;
else
$show_spring = 0;
// Will return the number of days between the two dates passed in
function count_days( $a, $b )
{
// First we need to break these dates into their constituent parts:
$gd_a = getdate( $a );
$gd_b = getdate( $b );
// Now recreate these timestamps, based upon noon on each day
// The specific time doesn't matter but it must be the same each day
$a_new = mktime( 12, 0, 0, $gd_a['mon'], $gd_a['mday'], $gd_a['year'] );
$b_new = mktime( 12, 0, 0, $gd_b['mon'], $gd_b['mday'], $gd_b['year'] );
// Subtract these two numbers and divide by the number of seconds in a
// day. Round the result since crossing over a daylight savings time
// barrier will cause this time to be off by an hour or two.
return round( abs( $a_new - $b_new ) / 86400 );
}
// assign variables to be used by html based on whether this is a spring or fall page
if ($show_spring) {
$season = "spring";
$to_next = count_days( $next_spring, $time );
$to_previous = count_days( $nearest_fall_back, $time );
$associatedword = "forward";
$justpast = "fell back";
} else {
$season = "fall";
$to_next = count_days( $next_fall, $time );
$to_previous = count_days( $nearest_spring_ahead, $time );
$associatedword = "back";
$justpast = "sprung forward";
}
?>
When is Daylight Savings Time?
