DuetCo-parent Calendar

3-4-4-3 custody schedule

Balance time in longer blocks

The 3-4-4-3 rotation alternates three- and four-night blocks so both parents receive seven overnights in each two-week cycle.

3-4-4-3 calculator

This is a planning preview. Recreate or draft your chosen rotation in Duet; the website does not automatically import it into the app.

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How the 3-4-4-3 rotation works

One parent has three nights, the other has four, then the sequence reverses. The pattern reduces transitions compared with 2-2-3 while keeping an equal two-week split.

Pros

  • Balanced time in a two-week cycle.
  • Fewer transitions than 2-2-3.
  • Predictable three- and four-night blocks.

Watchouts

  • Weekday responsibility can shift between weeks.
  • Four-night gaps may not fit every child.
  • Holiday exceptions need a shared source of truth.

Make every block easy to verify

Start free and keep the base rotation and exceptions together in Duet.

Start free with Duet

Keep the plan together

From a schedule to everyday coordination

Use Duet to review parenting-day changes, keep school details with tasks, and track shared costs alongside your calendar.