The answer is never, technically. The station is referred to as 'Hunts Bank Junction' in plans made on behalf of the station's originators (The Liverpool and Manchester Railway and The Manchester and Leeds Railway) but in December 1843, the MLR unanamously voted to name the station 'The Victoria Station.' The station duly opened on New Year's Day 1844 under the name Victoria. It has, theredore never been known as 'Hunts Bank' whilst in operational use. 
  I have a ton of information on Victoria station and would love to be able to help bring the article on this fine station up to something it really deserves. I'm fairly new to wikipedia and I'm a bit worried about performing a page one re-wrire on the article in cse I upset someone! Any assistance would be great.