When it comes to online calendars and calendar apps, services like Google Calendar and Outlook from Microsoft rule the roost with hundreds of millions of users globally. Now another company is hoping to ruffle some feathers with its own move into the space. TechCrunch has learned and confirmed that Yahoo is working Day, a new standalone calendar app. Sources tell us the company has recruited Jeremy Le Van — who co-founded another calendaring app, Sunrise, and eventually sold it to Microsoft for over $100 million to make it the backbone of Microsoft’s own very popular calendar platform in Outlook — to help …
