diff --git a/src/statd/iface.c b/src/statd/iface.c
index 8c5e55d45..16a6be145 100644
--- a/src/statd/iface.c
+++ b/src/statd/iface.c
@@ -28,6 +28,16 @@ static time_t monotonic(void)
 	return ts.tv_sec;
 }
 
+/* CLOCK_REALTIME - CLOCK_MONOTONIC in whole seconds, floored */
+static time_t clock_offset(void)
+{
+	struct timespec rt, mono;
+
+	clock_gettime(CLOCK_REALTIME, &rt);
+	clock_gettime(CLOCK_MONOTONIC, &mono);
+	return rt.tv_sec - mono.tv_sec - (rt.tv_nsec < mono.tv_nsec);
+}
+
 static struct iface *iface_find(struct iface_ctx *ctx, const char *name)
 {
 	struct iface *l;
@@ -263,12 +273,13 @@ void iface_ctx_exit(struct iface_ctx *ctx)
 /* Add last-change to every interface in tree whose state changed since start */
 void iface_annotate(struct iface_ctx *ctx, struct lyd_node *tree)
 {
-	time_t now = time(NULL), mono = monotonic();
 	struct lyd_node *iface;
+	time_t off;
 
 	if (!tree)
 		return;
 
+	off = clock_offset();
 	LY_LIST_FOR(lyd_child(tree), iface) {
 		struct iface *l;
 		char buf[32];
@@ -277,7 +288,7 @@ void iface_annotate(struct iface_ctx *ctx, struct lyd_node *tree)
 		if (!l || !l->changed)
 			continue;
 
-		format_timestamp(now - (mono - l->changed), buf, sizeof(buf));
+		format_timestamp(l->changed + off, buf, sizeof(buf));
 		if (lyd_new_term(iface, NULL, "last-change", buf, 0, NULL))
 			WARN("Failed adding last-change to interface %s", l->name);
 	}
diff --git a/src/statd/python/cli_pretty/cli_pretty.py b/src/statd/python/cli_pretty/cli_pretty.py
index 4fa241ade..d43a855d3 100755
--- a/src/statd/python/cli_pretty/cli_pretty.py
+++ b/src/statd/python/cli_pretty/cli_pretty.py
@@ -665,9 +665,7 @@ def from_yang(cls, ydate):
         if not ydate:
             return None
 
-        date, tz = ydate.split("+")
-        tz = tz.replace(":", "")
-        return cls.strptime(f"{date}+{tz}", "%Y-%m-%dT%H:%M:%S%z")
+        return cls.fromisoformat(ydate)
 
 class Route:
     def __init__(self, data, ip):