be going on something
be going on (for) (something)
To be approaching something in particular, often a time or age. Primarily heard in UK. My daughter is going on 16 and is very excited to finally be able to drive.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
be going on (for) something(British English) be nearly a particular age, time or number: It was going on for midnight by the time we left.
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