OnInit:
OnClock0000:
set .available,0;
set .random_minute,( 24 * 60 );
while( .available < 3 ){
	set .delay_time,rand( .random_minute );
	sleep ( .delay_time * 60000 );
	announce "I am now available.",0;
	set .available,.available + 1;
	sleep ( 60 * 60000 ); // available 1 hour
	announce "I am NOT available now.",0;
	set .random_minute,.random_minute - ( .delay_time + 60 );
}
end;