South Dakota Custody Calculator
Understanding South Dakota's very high threshold for joint physical custody.
South Dakota Shared Custody Threshold
180
Overnights
Below threshold
Primary Physical Custody
At or above threshold
Joint Physical Custody
What This Means
- Below 180 overnights: Primary physical custody formula applies.
- 180+ overnights: Joint physical custody formula applies.
180 overnights represents approximately 49% of the year — essentially a true 50/50 split.
Highest Threshold in the Nation
South Dakota's 180-night threshold is the highest in the U.S., requiring near-perfect equal time for joint physical custody treatment.
Schedules That Meet South Dakota's Threshold
| Schedule | Overnights | Meets 180? |
|---|---|---|
| 2-2-3 | ~182 | ✓ Yes |
| Week-on-week-off | ~182 | ✓ Yes |
| 4-3 | ~156 | ✗ No |
South Dakota Resources
Consult with a South Dakota family law attorney for guidance.
Frequently Asked Questions
Why is South Dakota's threshold so high?
At 180 overnights (49%), South Dakota requires a true 50/50 split for joint physical custody treatment.
Calculate Your South Dakota Custody Schedule
See if your schedule meets South Dakota's 180-night threshold.
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