DoSomethingSchedule.cs

public class DoSomethingSchedule : ScheduleSetup<DoSomethingJob> 
{
    public DoSomethingSchedule(IScheduler scheduler) 
        : base(scheduler)
    {
    }

    protected override TriggerBuilder CreateTrigger()
    {
        return TriggerBuilder.Create()
            .WithSchedule(CronScheduleBuilder.MonthlyOnDayAndHourAndMinute(1, 5, 0));
    }
}