Remember when Black Friday was an in-person, rush-the-store event held only on the actual Friday after Thanksgiving? Thankfully, those days are long gone. Now, the sales last for weeks, you can shop online, and there is no reason for a stampede of shoppers.

In fact, in many cases, the Black Friday deals have already begun. The shopping team at Mashable has collected some of the best early Black Friday deals — but here's all you need to know about when the shopping begins for some of the major retailers.

Walmart

The Walmart Black Friday deals span nearly half of November. It had deals from Nov. 14-16, but will have another event Nov. 25-30. It will also have deals on Dec. 1, aka Cyber Monday.

Amazon

Amazon's Black Friday sale runs from today, Nov. 20, through Cyber Monday.

Best Buy

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