Black Friday(感恩节后第二天)和Boxing Day(圣诞后第二天)。 为什么？这两天都是销售旺季啊！Black Friday标志着Christmas Shopping Season的开始：
On this day, many retailers open very early, often at 4 a.m., or earlier, and offer promotional sales to kick off the shopping season. Black Friday is not actually a holiday, but many employers give their employees the day off, increasing the number of potential shoppers。
In Britain, Canada, New Zealand and some states of Australia, Boxing Day is primarily known as a shopping holiday, much like the day after Thanksgiving in the United States. It is a time where shops have sales, often with dramatic price decreases. For many merchants, Boxing Day has become the day of the year with the greatest revenue。