**Category:** Mechanics  
**Subtype:** Oscillations (Simple Harmonic Motion)  
**Problem Description:** This problem involves two coupled spring-mass systems oscillating in simple harmonic motion. We need to determine the time at which both masses have the same displacement for the 2018th time after they are released from their initial positions.  

**Key Information:**
- Two springs with stiffness \(k_1\) and \(k_2\) where \(k_2 = 9k_1\).
- Two masses \(m_1\) and \(m_2\) where \(m_2 = 4m_1\).
- The period of oscillation for the first mass-spring system \((k_1, m_1)\) is \(0.25 \, s\).
- The initial conditions involve one spring being stretched and the other compressed by the same distance \(A\).

**Objective:** Find the time \(t\) when both masses have the same displacement for the 2018th occurrence.