PS: I should have also stated that ANY time spent in custody is deducted from the time left to be served. For example, if the offender had to attend a police station (even for a few minutes) when surrendering to bail, that counts as a 'police day' and a day will be knocked off the time served. (However, that doesn't always happen automatically. The offender usually needs to make an application to the prison authorities, to have 'police days' taken off the time which he'll serve).