I work for the United State Geological Survey. We would also like to request 
timeline support so that we can use google earth to showcase our modeling data and 
in the future real-time modeling forecasts. I am sure many scientists would make use 
of the timeline feature in googel earth API.

Add historians to the list of people that would REALLY like built-in timeline support.

This would also be a huge help for visualizing for biological data. I've been hoping to port an ecological 
monitoring app(http://www.piscoweb.org/subtidal_gmap) to the Earth API as soon as timeline support is 
enabled. 

It would be easy enough to implement my own widget, but it becomes harder to train users. Google Earth is 
one of the few 4d interfaces that users are already comfortable with, and it would be great to leverage that.

For it to be really useful, it would be great to have access to timeline events so I can sync up dynamic charts 
that display side-by-side with the Earth API.

Archaeologists would find this very usefull as well.

This has got to happen soon! I am with the US Army and we have an enterprise system (still waiting for 
enterprise support for plugin), but we are developing like crazy. We have many, many timeline animations that 
are part of our client that will need to be migrated into the browser. Please hurry.

add the german railway development industrie on your list... it´s would be great to 
have some timeline features. 

I'd like to be able to move this into a browser also:

http://bbs.keyhole.com/ubb/showthreaded.php/Cat/0/Number/1242165/an/0/page/0#1242165

WildEarth.TV broadcasts LIVE from a moving safari vehicle in the African bush, and
our users would love to be able to see the historical track of our vehicle. So you
can add the LIVE wildlife broadcasting industry onto the list of folk that would like
the timeline features. 

Adding the timeline capability to the plugin would be huge for us. We've found this
capability in the standalone version to be one of the most useful features when
fusing and visualizing multiple, time stamped sensor data 

If/when the timeline capability is added, would it be possible to have a user-
defined playback speed more fine-grained than 'slow' to 'fast'? We are currently 
using Google Earth for test flight data playback and being able to play back in real-
time in connection with our flight videos would be a great feature. Thanks so much 
for a great product.

We have found that simulating tracks requires more than just adding a timeline to GE,
as the speed and orientation of the segments have to be calculated before positioning
and moving the camera and target point appropriately. It's a fun mathematical
challenge that we have spent some time on with StarTraX, at
http://www.gpsanimator.com. The current release is based on the old COM API with GE,
but we're close to releasing a version using the GE api plugin. 

I would also like to add my request for time sliders in the GE API. I'm working on a
historical project that would benefit hugely. Pretty please?

One more vote for timespan, and I second it usefullness for
biological/ecology/conservation applications!

Please add the timeline!, we are working on a spread simulation engine for avian and 
human influenza for UN, using Google Earth to display the results.
Using the GE API allow us to have better customised user interface, but we miss the 
time control, it's fundamental to display the spread
Many many thanks!

another vote for the timeline! We really need it!

it would be great to have the timespan in google earth api!

We'd also like to see this. We model the time evolution of various airborne
pollutants, and the timeline feature in the GE client has been extremely useful for
making mpeg animations. However, with this feature in the plugin we would be able to
bring far richer content to people's browsers.

Still another vote to add timeline support.  I work for the U.S. National Weather
Service and it would be a great asset to loop radar and satellite data in the browser
api plugin like we do in the stand alone GE.

 Issue 152  has been merged into this issue.

(No comment was entered for this change.)

I'm also with the National Weather Service, and I'd like to throw my vote in as well.
As a Techniques Development Meteorologist - after some initial poking around with the
GE API - the lack of timeline support is the main issue that led me to stop
development with it for the time being.

Likewise, here at the National Ocean Service the lack of this feature is pretty much
a showstopper for developing applications to disseminate data.

We at the Icleandic Meteorological Office, would also
greatly apreciate that the <TimeSpan> kml tag be implemented
in the google earth API.  That would be fantastic!, as
the API allows for such easy implementation of the 3D GE,
and great for simplifying the viewing pleasure of 
weather information for the public. 
I am certain that most Met. Offices in the world would
quickly adopt the GE API plugin after that.

It would be very useful for the presentation of archaeological data

The World Resources Institute would also love this feature for displaying our data
sets at EarthTrends (earthtrends.wri.org) in the Google Earth Plugin.

Basic timeline support is available as of 5.0.11655.6079. In order to show the
timeline, simply parseKml or fetchKml some KML that has features with time primitives
such as TimeSpan or TimeStamp.

See the release notes, new Google Earth Plugin 5.0 samples, and updated v1.002 API
reference for more details.

http://code.google.com/apis/earth/documentation/releasenotes.html#2009-03-31
http://code.google.com/apis/earth/documentation/demogallery.html?topic=fiveoh
http://code.google.com/apis/earth/documentation/reference/index.html

It's nice but can i also turn the Visibility off like statusbar of navigation ???

setStatusBarVisibility()
ge.getNavigationControl().setVisibility(ge.VISIBILITY_SHOW);

Tried to do it without success.

Moreover if you switch from Earth to Sky mode the time slider is still displayed and
you can't turn it off!