How to know that Google Crawler visits our website

[shailendra.dimension]

Hi, all i have a question can any one give answer of these two questions.

1) How can can i know that Google Visits our website?
2) How many times in a day Google Visits a particular website.

Regards
Shailendra Dubey
SEO Executive
Dimension India Networks Pvt Ltd
Noida (U.P) India
http://www.dimensioni.net

[weblaunchphxx]

Open your site and if you have google toolbar click on pagerank and then click on "cached snapshot of page"then you will see onp of the page a text that tell you that when crawler has visited your site last time.