Change your timezone
By default, the timezone is set at UTC-04:00(America/New York) when you first create your account. If this is not your timezone, it will be one of the first settings to configure. Your calendar and orders are based on your timezone, therefore, having the wrong setting will affect the hour/date of the appointment.
When you add employees or clients before setting up your timezone, they will be defined by default with the UTC-04:00(America/New York). The change of setting afterward will have to be done manually for each one. Settings menu