 Ha ' K 'in Xook yielded the throne on March 24 , 780 AD ( 9 @.@ 17 @.@ 9 @.@ 5 @.@ 11 10 <unk> 19 <unk> ) . The reason why his reign came to an end has been a topic of debate . Some believe that his reign ended with his abdication . Throne 1 , when translated , notes that he " abandoned / transferred rulership " , which American <unk> Stephen D. Houston interprets to mean that he abdicated in favor of his brother , K 'inich Yat Ahk II . <unk> David Stuart also noted that the wording on the throne " implies a more active event on the ruler 's part " , but that " ' lose ' might be more neutral as far as an interpretation goes . " 
