Briar Patch Trade Days

briar patch
Several films and episodes of the science fiction franchise Star Trek were set in distinct regions of space. Some of these fictional locations exhibited anomalous physical properties. Others were defined as sensitive buffer zones under political accords.

trade
Buy or sell (a particular item or product)
the skilled practice of a practical occupation; "he learned his trade as an apprentice"
Buy and sell goods and services
engage in the trade of; "he is merchandising telephone sets"
the commercial exchange (buying and selling on domestic or international markets) of goods and services; "Venice was an important center of trade with the East"; "they are accused of conspiring to constrain trade"
(esp. of shares or currency) Be bought and sold at a specified price

days
the time during which someone's life continues; "the monarch's last days"; "in his final years"
(day) time for Earth to make a complete rotation on its axis; "two days later they left"; "they put on two performances every day"; "there are 30,000 passengers per day"
(day) some point or period in time; "it should arrive any day now"; "after that day she never trusted him again"; "those were the days"; "these days it is not unusual"
A period of twenty-four hours as a unit of time, reckoned from one midnight to the next, corresponding to a rotation of the earth on its axis
The part of this period when it is light; the time between sunrise and sunset
The time spent working during such a period