The correlation of longevity with validity of an idea or trend.

Happening at an opportune or advantageous time. / Keeping accurate time.

(computing) The duration required by a computer system to complete a particular task.

Alternative letter-case form of Zulu time

(computer science) the amount of time an algorithm requires to run, as a function of the amount of input, measured in such a way as to ignore constant terms and multiplication by constant terms

(mathematics) The complexity class where the runtime can be bounded (from above) by a polynomial in the input size.

(mathematics) Of an algorithm, which terminates in polynomial time.

(set phrase, duration) Always; constantly; for the complete duration. / (set phrase, frequency) Very often; frequently.

Relative to a deadline rather than a competitor. / With urgency.

Alternative spelling of daytime