Url to calendar of user

With Exchange Server (2003) it was possible to link to a calendar of a specific user using an url like: https://mail.company.com/owa/firstname.lastname@company.com/?cmd=contents&module=calendar&view=weekly

Is this still possible one way or another with Office 365 OWA? Using the same url structure, this doesn't work: https://outlook.office365.com/owa/firstname.lastname@company.com/?cmd=contents&module=calendar&view=weekly

If I search around the subject, it seems like this isn't supported anymore...

Any idea how to handle this with Office 365 OWA?