We check this website, now wincalendar.com is up and dont blocked for our system and other users of the Internet.
So, answer to question: Is wincalendar Down Right Now? - NO! wincalendar is up!
If you have problem with access to site wincalendar, and domain wincalendar.com is not avalible.
Clear browser cache and/or try other web browser
(Chrome, Firefox or Safari).