Google updates its search system a couple times a year if not more, and its other services are also updated during every year. Check Google's website for information on the last update for each service.
Additionally
Google updates its search index every day so new web pages, images, and documents are being added all the time. In addition Google has other services such as Google Earth and Google Maps imagery, which has bulk updates every 2-3 weeks (but not all at once).
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The images in Google Earth (and Google Maps) are updated on a continuous basis. It's hard to say exactly when an area will be updated because some areas may be updated more frequently than others. Google provides KML feeds showing what areas have been updated in a given update. Google also provides a notification service you can signup to alert you when a given area is updated. For details see the related question.
Yes, Google Chrome has updated over time very much. Numerous features are being added into it.
The free version of Google Earth has an outdated map of the world from about 2005. The paid version of Google Earth is updated regularly.
google crome has been updated. Yall should know this. It is the 20th centery
Heathrow Airport is continuously being updated.
It gets updated really often, almost daily
New Google Earth satellite imagery is added approximately every 2 weeks or a twice a month. Street View imagery is updated on its own schedule. The same imagery that is added for Google Earth is available to Google Maps as well.
Google updates its imagery every 2-3 weeks. You can see what has been updated in each imagery update in the related links below.
2011
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When was the Fobes website last updated
Meta tags are information about a webpage that can be used by companies such as Google and Bing to build their indices. It contains information such as keywords, owner and when it was last updated.