Detecting if your page showing is last you updated

How to detect if your page in serp is last modified version?

[silverbytes]

How to detect if your page in serp is last modified version you updated and uploaded via ftp?

You tweak your page, upload, type a search, your pages comes up in position 15th but, is that your old page or your recent page you uploaded?

Is there anything you can look at to really know it?

[Wizard]

You can look to nothing else but Google Cache date. I think you can safely assume, that if the latest version of page code is not cached, it doesn't influence the ranking. Cache is one of the things Google updates most quickly.

Other may take indefinitely long time.

Calculating all links relations, including PageRank, anchor text, and other factor depending on web structure, not just page content, takes a significant amount of time and it's difficult to tell how long does it take to adjust SERPS to the changes.

And if Google implemented some new ideas, described in "Using document historical data..." patent, what's very likely, there is no answer to question "which version of the website influences the rankings?" because all version have the impact simultanously.

[silverbytes]

So is there any way to know if your current page is having any effect on google serp?