Think date and time must be wrong (8)
I believe the answer is:
meditate
'think' is the definition.
(meditating is a kind of thinking)
'date and time must be wrong' is the wordplay.
I cannot quite understand how this works, but
'date' could be 'd' (abbreviation e.g. dob - date of birth) and 'd' is present in the answer.
an anagram of 'time' is 'meit' which is present in the left over letters.
The remaining letters 'ate' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for meditate that I've seen before include "brood" , "Consider thoughtfully" , "Think contemplatively" , "Cogitate" , "Spend time in thought" .)