Unknown techniques from Google search

When we are looking for with the help of Google, you know many of the most popular "tricks" like the entire search phrase, enclose it in quotation marks or search for a specific site. However, there are some unknowns, but no less useful techniques. About them writes American Lifehacker. From what has been of interest:

find out local time
Using the query what time is it You know, in all major cities of the world or refine the query city: what time is it Moscow.

Find out the status of a flight
In the search box enter the name of the airlines and the flight number and exact time of departure and arrival. While for google.ru maintain the status of all the flights in Moscow, St. Petersburg and Novosibirsk airport.

Convert currencies, measurements, bytes, etc.
Google calculator will help you with this. Query examples: seconds in a year, 5 USD in Euro or 25436 bytes in kilobites.

Compare with the help of better than
Type in the search better than _vashe_klyuchevoe_slovoYou can find a large number of alternatives which, in the opinion of others, are better. You can try and in Russian:

Use Google cache
If you are denied access to certain sites, do not forget that you can help Google cache: cache: example.com.

Look for similar words and documents
This can be achieved by using the symbol "~", which should be put before the keyword (no spaces).

Teach Google to recognize faces
If Google Image Search to find photos of Hilton Paris You, but you do not need views of a city like Paris (Paris) and Hilton hotels photos, in the end, add the URL for the search & Imgtype = face. For example, compare the results for the search rose (Without specifying the results in many colors) and rose (With specification).

Convenient for you to find!

via Top 10 Obscure Google Search Tricks