When planning a meeting in Outlook, I can see others' schedules and hours. I am looking for a similar functionality over the web through a web site. It doesn't have to use Outlook or expect people to use Outlook.
Is there a web site which offers a similar service where people post their available hours on a shared calendar, a calendar which is open to anyone, where the person enters their name and available hours and then this information shows up on the calendar?
The idea is have a bird eye view of the availability of everyone who entered their info.
Please don't post just any scheduling or calendering site. I need the specific requirements I asked for.
EDIT: The calendar has to reside on a webpage that doesn't require any kind of signups or joining anything. It should be totally open. Each person should be able to enter their name and hours. So Google Calendar is out if it doesn't meet this requirement. I don't like to force anyone to join it.