du·ra·tion 
/dʊˈreɪʃən, Brit djʊˈreɪʃən/ noun
/dʊˈreɪʃən, Brit djʊˈreɪʃən/ noun [noncount] : the length of time that something exists or lasts
▪ You should gradually increase the duration of your workout.
▪ You should gradually increase the duration of your workout.
for the duration
: until the end of something
▪ He was living in England when the war began and remained there for the duration. — often + of ▪ The camera remained on the President for the duration of his speech.
▪ He was living in England when the war began and remained there for the duration. — often + of ▪ The camera remained on the President for the duration of his speech.
