I think it got its name from when a business could finally show a profit (BLACK ink in the accounting books), as opposed to losses (red ink). The time & day of the year, when a business can usually make the most money in a single day.
I think it got its name from when a business could finally show a profit (BLACK ink in the accounting books), as opposed to losses (red ink). The time & day of the year, when a business can usually make the most money in a single day.