Final answer:
New CONUS per diem rates become effective on October 15th following the ratification of the article. These rates are updated annually to reflect changes in the cost of living in various locations.
Step-by-step explanation:
New CONUS per diem rates become effective on October 15th following the ratification of the article. The rates are set by the federal government to reimburse employees for lodging, meals, and incidental expenses while on official travel. These rates are updated annually to reflect changes in the cost of living in various locations. For more information, you can refer to the implementation rule for the current standards signed on October 1, 2015.