typedef struct {
  unsigned char d;
  unsigned char m;
} Date;

void easter_c(unsigned short Y, Date *d) {
  int G = (Y % 19) + 1;
  int C = (int)(Y / 100) + 1;
  int X = 3 * C / 4 - 12;
  int Z = (8 * C + 5) / 25 - 5;
  int D = 5 * Y / 4 - X - 10;
  int E = (11 * G + 20 + Z - X) % 30;
  if (((E == 25) && (G > 11)) || (E == 24))
    ++E;
  int N = 44 - E;
  if (N < 21)
    N += 30;
  N = N + 7 - ((D + N) % 7);

  if (N > 31) {
    d->d = N - 31;
    d->m = 4;
  } else {
    d->d = N;
    d->m = 3;
  }
}

require 'date'

class Date
  def self.last_of_month( arg = Time.now )
    year = ( arg.is_a? Fixnum ) ? Time.now.year : arg.year
    mon  = ( arg.is_a? Fixnum ) ? arg : ( arg.mon rescue Time.now.mon )
    
    raise ArgumentError unless mon.between?( 1, 12 )

    begin; Date.new year, mon, mday ||= 31
    rescue ArgumentError; mday -= 1; retry
    end
  end
end

int epoch = (int)(DateTime.UtcNow - new DateTime(1970, 1, 1)).TotalSeconds;

./script/plugin source http://svn.rails-engines.org/plugins/
./script/plugin install engines

./script/plugin source http://svn.toolbocks.com/plugins
./script/plugin install datebocks_engine

def format_date(date, use_time = false)
    if use_time == true
        ampm = date.strftime("%p").downcase
        new_date = date.strftime("%B %d, %Y at %I:%M" + ampm)
    else
        new_date = date.strftime("%B %d, %Y")
    end
end

days-in-months: [31 28 31 30 31 30 31 31 30 31 30 31]
days-in-months-leap: head change at copy days-in-months 2 29

days-up-to-month: func [month /in year] [
    sum copy/part either leap-year?/with any [year now] [days-in-months-leap] [days-in-months] month - 1
]

<?php echo date('d/m/Y',strtotime($row_name['column'])); ?>

function time_since($original) {
    // array of time period chunks
    $chunks = array(
        array(60 * 60 * 24 * 365 , 'year'),
        array(60 * 60 * 24 * 30 , 'month'),
        array(60 * 60 * 24 * 7, 'week'),
        array(60 * 60 * 24 , 'day'),
        array(60 * 60 , 'hour'),
        array(60 , 'minute'),
    );
    
    $today = time(); /* Current unix time  */
    $since = $today - $original;
	
	if($since > 604800) {
		$print = date("M jS", $original);
	
		if($since > 31536000) {
				$print .= ", " . date("Y", $original);
			}

		return $print;

	}
    
    // $j saves performing the count function each time around the loop
    for ($i = 0, $j = count($chunks); $i < $j; $i++) {
        
        $seconds = $chunks[$i][0];
        $name = $chunks[$i][1];
        
        // finding the biggest chunk (if the chunk fits, break)
        if (($count = floor($since / $seconds)) != 0) {
            // DEBUG print "<!-- It's $name -->\n";
            break;
        }
    }

    $print = ($count == 1) ? '1 '.$name : "$count {$name}s";

    return $print . " ago";

}

(function(){
	var set_month = Date.prototype.setMonth;
	Date.prototype.setMonth = function(num){
		if(num <= -1){
			var n = Math.ceil(-num);
			var back_year = Math.ceil(n/12);
			var month = (n % 12) ? 12 - n % 12 : 0 ;
			this.setFullYear(this.getFullYear() - back_year);
			return set_month.call(this, month);
		} else {
			return set_month.apply(this, arguments);
		}
	}
})();

ActiveSupport::CoreExtensions::Time::Conversions::DATE_FORMATS.merge!(
  :gmail => lambda { |date|
    Time.now.beginning_of_day <= date ?
    "#{date.strftime('%I').to_i}:#{date.strftime('%M')} #{date.strftime('%p').downcase}" :
    Time.now.beginning_of_year <= date ?
    "#{date.strftime('%b')} #{date.day}" :
    "#{date.month}/#{date.day}/#{date.strftime('%y')}"
  }
)

ActiveSupport::CoreExtensions::Date::Conversions::DATE_FORMATS.merge!(
  :gmail => lambda { |date|
    Time.now.beginning_of_day <= date ?
    "#{date.strftime('%I').to_i}:#{date.strftime('%M')} #{date.strftime('%p').downcase}" :
    Time.now.beginning_of_year <= date ?
    "#{date.strftime('%b')} #{date.day}" :
    "#{date.month}/#{date.day}/#{date.strftime('%y')}"
  }
)