The calculation depends on whether this is a state or federal case and what the applicable good time rules are, but here is a realistic breakdown based on what you have described.
A six-month sentence with half time means the baseline expectation is serving approximately three months before release eligibility. The 17 days of work release credit you have already accumulated will come off that total, which reduces the remaining time to serve by those days from the point you turn yourself in.
However, probation violations are treated differently than standard sentences in some jurisdictions. Because the violation represents a failure to comply with the conditions of supervision, some courts and facilities apply stricter good time rules to violation sentences. In practice, many people serving time on a probation violation end up serving closer to 85% of the imposed time rather than the 50% half-time rate, depending on the state and the facility's policies.
The honest answer is that the exact number of days is difficult to predict without knowing the specific state, facility, and any other factors the system might consider. What is certain is that turning yourself in voluntarily, as you are planning to do, is viewed more favorably than being picked up. Self-surrender consistently results in better treatment at intake and can influence how the remainder of the process goes.
Three months is manageable. Keep your head down, avoid any additional violations, and the time will pass faster than it feels right now.
Thank you for trying AMP!
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