Use determination time instead of CGM time because tz changes on an active sensor will be stuck on the original tz

FreeAPS/Sources/Services/LiveActivity/Data/DataManager.swift

@@ -33,7 +33,7 @@ extension LiveActivityBridge {
             key: "deliverAt",
             ascending: false,
             fetchLimit: 1,
-            propertiesToFetch: ["iob", "cob", "currentTarget"]
+            propertiesToFetch: ["iob", "cob", "currentTarget", "deliverAt"]
         )
 
         return await context.perform {
@@ -45,7 +45,8 @@ extension LiveActivityBridge {
                 DeterminationData(
                     cob: ($0["cob"] as? Int) ?? 0,
                     iob: ($0["iob"] as? NSDecimalNumber)?.decimalValue ?? 0,
-                    target: ($0["currentTarget"] as? NSDecimalNumber)?.decimalValue ?? 0
+                    target: ($0["currentTarget"] as? NSDecimalNumber)?.decimalValue ?? 0,
+                    date: $0["deliverAt"] as? Date ?? nil
                 )
             }
         }

FreeAPS/Sources/Services/LiveActivity/Data/DeterminationData.swift

@@ -4,4 +4,5 @@ struct DeterminationData {
     let cob: Int
     let iob: Decimal
     let target: Decimal
+    let date: Date?
 }

FreeAPS/Sources/Services/LiveActivity/LiveActitiyAttributes.swift

@@ -16,7 +16,7 @@ struct LiveActivityAttributes: ActivityAttributes {
         let bg: String
         let direction: String?
         let change: String
-        let date: Date
+        let date: Date?
         let highGlucose: Decimal
         let lowGlucose: Decimal
         let target: Decimal

FreeAPS/Sources/Services/LiveActivity/LiveActivityAttributes+Helper.swift

@@ -126,7 +126,7 @@ extension LiveActivityAttributes.ContentState {
             bg: formattedBG,
             direction: trendString,
             change: change,
-            date: bg.date,
+            date: determination?.date ?? nil,
             highGlucose: settings.high,
             lowGlucose: settings.low,
             target: determination?.target ?? 100 as Decimal,

FreeAPS/Sources/Services/LiveActivity/LiveActivityBridge.swift

@@ -242,7 +242,7 @@ import UIKit
             } else {
                 let content = ActivityContent(
                     state: state,
-                    staleDate: min(state.date, Date.now).addingTimeInterval(360) // 6 minutes in seconds
+                    staleDate: min(state.date ?? Date.now, Date.now).addingTimeInterval(360) // 6 minutes in seconds
                 )
                 await currentActivity.activity.update(content)
             }

LiveActivity/Views/WidgetItems/LiveActivityUpdatedLabelView.swift

@@ -20,7 +20,7 @@ struct LiveActivityUpdatedLabelView: View {
     }
 
     var body: some View {
-        let dateText = Text("\(dateFormatter.string(from: context.state.date))")
+        let dateText = Text("\((context.state.date != nil) ? dateFormatter.string(from: context.state.date!) : "--")")
 
         if isDetailedLayout {
             VStack {