Compléter Favourite Times - gap-fillVersion en ligne Fill in the gaps. par Boglárka Kozári 1 depressing calls dark light breaking see winter weekend outside first short working ? In the UK the third Monday in January is the most day of the year , says psychologist Dr Cliff Arnall , who it Blue Monday . Why ? Because it's , the weather is usually grey and cold , the days are , and Monday is the day of the week . People are also often of money after Christmas , and some people feel bad after their New Year resolutions . And the happiest day of the year ? * The third Friday in June , ' says Dr Arnall . And it's easy to why - it's summer , it's warm , the evenings are , and the starts now !