Hate mornings, especially on Mondays? You may be surprised to know that much of the world doesn’t share that grumpy feeling.Twitter shows people are more cheerful in the morning, get gloomier as the day wears on and rebound in the evening, with a peak right before bedtime. They’re also happier from December to late June, when days gradually lengthen in the Northern Hemisphere. @Yungjohnnybravo @TatWZA