it's not to late to start an online ad campaign

Top shopping dates to plan advertising for
Thanksgiving — 11/26
Black Friday — 11/27
Cyber Monday — 11/30
Green Monday — 12/14
Last ship date — 12/17
Post-holiday sales — 12/27
According to Bing.

Cyber Monday makes history
Cyber Monday exceeded $2 Billion in sales in 2014 for the first time – the greatest online sales day in U.S. history!