Time, between a day and a month, tense on Parisian hill (10)
I believe the answer is:
montmartre
'time between a day' is the definition.
I can't tell whether this definition defines the answer.
'a month tense on parisian hill' is the wordplay.
'a month' becomes 'Mar' (short for March).
'tense' becomes 't' (abbreviation used in many dictionaries).
'on' means one lot of letters goes inside another.
'parisian hill' becomes 'montre' (I can't explain this - if you can you should believe this answer much more).
'mar'+'t'='mart'
'mart' inserted inside 'montre' is 'MONTMARTRE'.
'and' is the link.
Can you help me to learn more?
(Other definitions for montmartre that I've seen before include "bohemian district" , "Paris area" , "sort of square where artists met" , "District of Paris, associated with many artists" , "Parisian location" .)