You've signed up to Simple Salon and realised that the times are wrong. Well, that just means you need to configure the Location Settings in your Simple Salon account. The video below covers things like currency type and tax rates as well as time zones.
Pop over to your Settings page, and then into Location Settings.
Ensure that you have selected the correct Time Zone, Currency Symbol, Tax Rates, Country Code and Phone Country Code.
Want to see Location Settings in action? Sure you do.