"their timeliness" is correct and usable in written English.
You can use it to refer to someone's punctuality or promptness. For example, "The team was commended for their timeliness in completing the project ahead of schedule."
Space tourism companies aren't known for their timeliness.
News films, more than any other type of motion picture, depend on their timeliness.
Conlon has handled the ball, freeing Diana Taurasi to roam, and has hit 3-pointers notable less for their frequency than for their timeliness.
There is joy in reading essays by food writers like Joseph Wechsberg and A. J. Liebling even if their timeliness has faded.
But Mr. Weiner, who also won an Emmy for outstanding writing of a drama series, noted that the commonality of the winners from cable series was their timeliness.
Their timeliness and truthfulness have brought comments from Mr. L.M. Garrison, the Secretary of War, who said: "We are absolutely unprepared for war.
Opened and added to every 2000 hours, taking on new meanings with each collaboration, so assuring everyone of their own timeliness that they shall not be overlooked.
In fact, many of Michael Kimmelman's recent writings--his attack on the lackluster One World Trade Center, his plea to save Paul Rudolph's Brutalist landmark in Goshen, NY, his exposition of Berlin after the fall of the Wall, etc.--capably illustrate the "seven lamps" in their tone, timeliness, and relevance.
Although providing reliable results, they were limited by their poor timeliness.
Such data streams have their own timeliness issues, due in part to culturing of samples.
This performance list ranks them by a formula that includes their overall timeliness, quality scores, and review volume.
