diff --git a/backtest/runner.go b/backtest/runner.go
index 8820d9944e..9e29ba5346 100644
--- a/backtest/runner.go
+++ b/backtest/runner.go
@@ -503,18 +503,19 @@ func (r *Runner) buildDecisionContext(ts int64, marketData map[string]*market.Da
 
 	runtime := int((ts - int64(r.cfg.StartTS*1000)) / 60000)
 	ctx := &decision.Context{
-		CurrentTime:     time.UnixMilli(ts).UTC().Format("2006-01-02 15:04:05 UTC"),
-		RuntimeMinutes:  runtime,
-		CallCount:       callCount,
-		Account:         accountInfo,
-		Positions:       positions,
-		CandidateCoins:  candidateCoins,
-		PromptVariant:   r.cfg.PromptVariant,
-		MarketDataMap:   marketData,
-		MultiTFMarket:   multiTF,
-		BTCETHLeverage:  r.cfg.Leverage.BTCETHLeverage,
-		AltcoinLeverage: r.cfg.Leverage.AltcoinLeverage,
-		Timeframes:      r.cfg.Timeframes,
+		CurrentTime:        time.UnixMilli(ts).UTC().Format("2006-01-02 15:04:05 UTC"),
+		CurrentTimestampMs: ts, // Set current backtest timestamp for accurate holding duration calculation
+		RuntimeMinutes:     runtime,
+		CallCount:          callCount,
+		Account:            accountInfo,
+		Positions:          positions,
+		CandidateCoins:     candidateCoins,
+		PromptVariant:      r.cfg.PromptVariant,
+		MarketDataMap:      marketData,
+		MultiTFMarket:      multiTF,
+		BTCETHLeverage:     r.cfg.Leverage.BTCETHLeverage,
+		AltcoinLeverage:    r.cfg.Leverage.AltcoinLeverage,
+		Timeframes:         r.cfg.Timeframes,
 	}
 
 	// Fetch quantitative data if enabled in strategy (uses current data as approximation)
@@ -847,7 +848,7 @@ func (r *Runner) convertPositions(priceMap map[string]float64) []decision.Positi
 			UnrealizedPnLPct: 0,
 			LiquidationPrice: pos.LiquidationPrice,
 			MarginUsed:       pos.Margin,
-			UpdateTime:       time.Now().UnixMilli(),
+			UpdateTime:       pos.OpenTime, // Use position open time instead of current system time
 		})
 	}
 	return list
diff --git a/decision/engine.go b/decision/engine.go
index 12c7305f4d..4e7ecf1d1e 100644
--- a/decision/engine.go
+++ b/decision/engine.go
@@ -106,23 +106,24 @@ type RecentOrder struct {
 
 // Context trading context (complete information passed to AI)
 type Context struct {
-	CurrentTime     string                             `json:"current_time"`
-	RuntimeMinutes  int                                `json:"runtime_minutes"`
-	CallCount       int                                `json:"call_count"`
-	Account         AccountInfo                        `json:"account"`
-	Positions       []PositionInfo                     `json:"positions"`
-	CandidateCoins  []CandidateCoin                    `json:"candidate_coins"`
-	PromptVariant   string                             `json:"prompt_variant,omitempty"`
-	TradingStats    *TradingStats                      `json:"trading_stats,omitempty"`
-	RecentOrders    []RecentOrder                      `json:"recent_orders,omitempty"`
-	MarketDataMap   map[string]*market.Data            `json:"-"`
-	MultiTFMarket   map[string]map[string]*market.Data `json:"-"`
-	OITopDataMap    map[string]*OITopData              `json:"-"`
-	QuantDataMap    map[string]*QuantData              `json:"-"`
-	OIRankingData   *provider.OIRankingData                `json:"-"` // Market-wide OI ranking data
-	BTCETHLeverage  int                                `json:"-"`
-	AltcoinLeverage int                                `json:"-"`
-	Timeframes      []string                           `json:"-"`
+	CurrentTime        string                             `json:"current_time"`
+	CurrentTimestampMs int64                              `json:"-"` // Current timestamp in milliseconds (for backtest time calculations)
+	RuntimeMinutes     int                                `json:"runtime_minutes"`
+	CallCount          int                                `json:"call_count"`
+	Account            AccountInfo                        `json:"account"`
+	Positions          []PositionInfo                     `json:"positions"`
+	CandidateCoins     []CandidateCoin                    `json:"candidate_coins"`
+	PromptVariant      string                             `json:"prompt_variant,omitempty"`
+	TradingStats       *TradingStats                      `json:"trading_stats,omitempty"`
+	RecentOrders       []RecentOrder                      `json:"recent_orders,omitempty"`
+	MarketDataMap      map[string]*market.Data            `json:"-"`
+	MultiTFMarket      map[string]map[string]*market.Data `json:"-"`
+	OITopDataMap       map[string]*OITopData              `json:"-"`
+	QuantDataMap       map[string]*QuantData              `json:"-"`
+	OIRankingData      *provider.OIRankingData            `json:"-"` // Market-wide OI ranking data
+	BTCETHLeverage     int                                `json:"-"`
+	AltcoinLeverage    int                                `json:"-"`
+	Timeframes         []string                           `json:"-"`
 }
 
 // Decision AI trading decision
@@ -1035,7 +1036,12 @@ func (e *StrategyEngine) formatPositionInfo(index int, pos PositionInfo, ctx *Co
 
 	holdingDuration := ""
 	if pos.UpdateTime > 0 {
-		durationMs := time.Now().UnixMilli() - pos.UpdateTime
+		// Use context timestamp if available (for backtest), otherwise use system time (for live trading)
+		currentTimeMs := ctx.CurrentTimestampMs
+		if currentTimeMs == 0 {
+			currentTimeMs = time.Now().UnixMilli()
+		}
+		durationMs := currentTimeMs - pos.UpdateTime
 		durationMin := durationMs / (1000 * 60)
 		if durationMin < 60 {
 			holdingDuration = fmt.Sprintf(" | Holding Duration %d min", durationMin)