Current schedules (4,6)

I believe the answer is:

tide tables

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'current schedules' is the definition.
The definition suggests a plural noun which matches the answer.

'current schedules' is the wordplay.
'current' becomes 'tide' (I've seen this before).
'schedules' becomes 'tables' (I am not sure about this - if you are sure you should believe this answer much more).
'tide'+'tables'='TIDE TABLES'

Can you help me to learn more?

I've seen this clue in The Irish Independent.

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