Mum meeting Granny? Any time will do (6)

I believe the answer is:

manana

I'm a little stuck... Click here to teach me more about this clue!

'any time will do' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'mum meeting granny?' is the wordplay.
'mum' becomes 'ma' (synonyms).
'meeting' says to put letters next to each other.
'granny?' becomes 'nana' (I've seen this before).
'ma'+'nana'='MANANA'

Can you help me to learn more?

(Other definitions for manana that I've seen before include "Contrapuntal musical composition" , "Tomorrow in Cadiz" , "Tomorrow in Madrid" , "Tomorrow on the Costa del Sol" , "Tomorrow (suggesting procrastination)" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.