Because all children develop at their own rate, the ages given are not an exact timeline.

Available sources leave some uncertainty and ambiguity regarding the exact timeline of Crittenden's education.

The compilation of the Varronian chronology was an attempt to determine an exact year-by-year timeline of Roman history up to his time.

Barrie Police noted that no foul play was suspected, and that the investigation was ongoing to determine an exact timeline.

The rate at which Dupuytren's progresses is highly variable, so your doctor won't be able to give you an exact timeline.

Regardless of the exact timeline for when infants start to see particular colors, it is understood among researcher that infants' color sensitivity improves with age.

Even though these works don't throw much light on the exact timelines of each king and their reign, they are considered trustworthy accounts that present facts as they occurred.

Regardless of the exact timeline, Jack did not learn of this affair for over two decades.

The exact timeline for reconstruction has not yet been adopted, although the reconstruction's budget has been drafted in the city's 2010 budget.

The exact timeline of this development is still subject to debate.