Contribute to jquery/jquery-ui development by creating an account on GitHub. Next: Write a JavaScript function to calculate 'yesterday day'. Was this common usage of "mother-in-law" in late 19th century in US census? Hello, i need help. Tags: datepicker, days, javascript, jquery, onSelect, programming, ui, week Home Portada My Posts Mis Posts About Me Acerca de mí Contact Me Escríbeme Initialize the datepicker and set the first day of the week as Monday. In 321 CE Emperor Constantine established the seven-day week in the Roman calendar, and he designated Sunday as the first day of the week and as a day of rest and worship. Contribute your code and comments through Disqus. Hope it helps. Initialize the datepicker and draw current language from right to left. It is counterproductive to read very long text books during an MSc program, Secure way to hold private keys in the Android app. In ISO 8601, a week begins from Monday, and Thursday is the middle day of a week. Try adding weekStart . Always add the