The layer itself does not give any dates as to when the imagery was added to Google Earth. As of this writing some of the imagery marked has not yet made it into ‘historical imagery’, and if it is not in the default layer, cannot be viewed at all. There is some overlap between it and the imagery we found using the Google Earth plugin. However, it does not include the image of the crater in Tianjin that was also recently added and is also not yet in ‘historical imagery’. All this suggests that it includes a number of recent updates, but not the most recent, and not all the updates since Edition 1 of the Voyager layer.
The most recent images in the collection are a pair of images captured on September 9th, 2015, of Tingri in Tibet, China.
The oldest image is the only image from 2007 and is of Chitrāl, Pakistan, and together with an image from August 11th, 2015 was probably added to assist with flood relief efforts in the region. Next oldest is an image from 2010 of a strip of Myanmar, again probably relating to flooding. We cannot yet investigate further, as these particular images are not yet in historical imagery, nor in the default layer. Both countries do feature other recent imagery in the default layer that is not listed in this layer.
Here are the total areas of the imagery by continent, (calculated using this useful site). Keep in mind that this is more than the actual total area covered, as some of the imagery overlaps.
|Continent||Area in sq kms|
|Oceans & Islands||57,180|
We have also colour coded the layer by date which you can see in Google Earth by downloading this KML file.