CO Const., Article IV, Section 10

Governor may adjourn legislature. The governor, in case of a disagreement between the two houses as to the time of adjournment, may upon the same being certified to him by the house last moving adjournment, adjourn the general assembly to a day not later than the first day of the next regular session. Source: Entire article added, effective August 1, 1876, see L. 1877, p. 35.