When looking for local meetups and events, you have to consider your own schedule. Work, school, business meetings -- life often gets in the way of your networking efforts.
To help users see which events fit their schedule, Meetup.com could deploy an improved calendar view. Week view calendars visualize time of day vertically, and day of the week horizontally. This is perfect for seeing which events fit within your available blocks of time.
From screenshots I built a block-frame design (Fig. 2.3), as well as a blank slate (Fig. 2.4) to use as the canvas for the calendar interface.
I adopted patterns from Google Calendar's week view, where the seven columns for each day are the same width, and the far left column for time [hh:mm] is just a bit smaller.
The initial mockup contained a light color pallet that was difficult to see, so I darkened the colors to add visual contrast. [fig. 4.1]
I also removed the deselected groups [fig. 4.2], since it's more useful to only show groups the user has selected for viewing.