Features

Although Show My Time is still being developed, it's already packed with a great toolset:
Drag and Drop Creation
Adding content is as easy as dragging a new time span onto the desired timeline.
Dragging and Sizing
All timespans can be edited simply by dragging them to the desired position. Spans are also easily adjusted with convenient sizing handles.
Multiple View Spans
Your timelines can be viewed in a "day view", "week view", "month view", "3 month view", or a "year view".
Online Database
Show My Time saves all your data in an online database. You can access your data from anywhere, anytime.
Multi-Colored
Your time spans can be one of six colors.
Timeline Rearrangement
Timelines can be rearrangement by simply grabbing the timeline label and moving it to the desired position.
Easy Editing
Timelines and time spans edited with a simple double click. Time spans can have titles and notes both of which are always viewed.

Show My Time is quite young still so several features are not active yet. Most notably are:
Timeline Sharing
This is the ability to share your timelines with either a select group of people, or as a global share. It will be possible for your select group to have both read rights or read/write rights. A globally shared timeline will be very useful for making schedules available to the general public.
Duplication
This will give you the ability to select a specific time span and duplicate the contents to another future or past time span.