New Year's, falling as it did this year on a Tuesday, cost the nation $13.2 billion in lost production, according to Wallace Barlow, but he has a plan to fix all that. Barlow is a retired Navy engineer who has spent the last 18 years studying holidays. He concludes that they have a drastic effect on the economy, especially midweek holidays. "Production falls 40 percent, sales drop 30 percent, absenteeism increases 15 percent . . . It costs $192 million in federal employe salaries alone," he says. His solution is to redraw the calendar into 12 months of 28 days each, with holidays ranging from one to six days tacked on at the end of each month. He has tried to coordinate it all with climatic factors, and has given the holidays names like Winter Festival in what is now January, Festival of Peace (June) and Music Festival (October). There are no midweek holidays and there is no New Year's Day. What there is lots of holidays -- 21 more than the current calendar offers. There are 14 fewer work days and 52 percent more leisure time. And with all this, production rises 15 per cent, he figures, because broken weeks are eliminated.