Time of pageantry (3)
I believe the answer is:
age
'time' is the definition.
(an age is a period of time)
'of pageantry' is the wordplay.
'of' says the answer is hidden in the clue.
'AGE' can be found hidden inside 'pageantry'.
(Other definitions for age that I've seen before include "Period of time" , "Years since birth" , "Era; grow old" , "Years lived so far" , "16/18 [INDUSTRIAL REVOLUTION]" .)