diff --git a/src/dsql/ExprNodes.cpp b/src/dsql/ExprNodes.cpp
index 8066bf30be..23bc600f0d 100644
--- a/src/dsql/ExprNodes.cpp
+++ b/src/dsql/ExprNodes.cpp
@@ -4272,11 +4272,7 @@ dsc* CurrentTimeNode::execute(thread_db* tdbb, jrd_req* request) const
 	request->req_flags &= ~req_null;
 
 	// Use the request timestamp.
-	ISC_TIMESTAMP_TZ currentTimeStamp = request->getTimeStampTz();
-
-	impure->vlu_misc.vlu_sql_time_tz.time_zone = tdbb->getAttachment()->att_current_timezone;
-	impure->vlu_misc.vlu_sql_time_tz.utc_time = TimeZoneUtil::timeStampTzToTimeTz(currentTimeStamp).utc_time;
-
+	impure->vlu_misc.vlu_sql_time_tz = request->getTimeTz();
 	TimeStamp::round_time(impure->vlu_misc.vlu_sql_time_tz.utc_time, precision);
 
 	impure->vlu_desc.makeTimeTz(&impure->vlu_misc.vlu_sql_time_tz);
diff --git a/src/jrd/req.h b/src/jrd/req.h
index d5b478d91c..86c7511369 100644
--- a/src/jrd/req.h
+++ b/src/jrd/req.h
@@ -239,6 +239,8 @@ private:
 	// These are valid only when !req_gmt_timestamp.isEmpty(), so no initialization is necessary.
 	mutable ISC_TIMESTAMP req_local_timestamp;	// Timestamp in req_timezone's timezone
 	mutable ISC_USHORT req_timezone;			// Timezone borrowed from the attachment
+	mutable ISC_TIME req_local_time;			// req_gmt_timestamp converted to local time (WITH TZ)
+	mutable bool req_local_time_valid;			// req_local_time calculation is expensive. So is it valid (calculated)?
 
 public:
 	MemoryPool* req_pool;
@@ -410,6 +412,35 @@ public:
 		return timeStampTz;
 	}
 
+	ISC_TIME_TZ getTimeTz() const
+	{
+		fb_assert(!req_gmt_timestamp.isEmpty());
+
+		ISC_TIME_TZ timeTz;
+
+		if (req_timezone != req_attachment->att_current_timezone)
+			updateLocalTimeStamp();
+
+		if (req_local_time_valid)
+		{
+			timeTz.utc_time = req_local_time;
+			timeTz.time_zone = req_timezone;
+		}
+		else
+		{
+			ISC_TIMESTAMP_TZ timeStamp;
+			timeStamp.utc_timestamp = req_gmt_timestamp.value();
+			timeStamp.time_zone = req_timezone;
+
+			timeTz = Firebird::TimeZoneUtil::timeStampTzToTimeTz(timeStamp);
+
+			req_local_time = timeTz.utc_time;
+			req_local_time_valid = true;
+		}
+
+		return timeTz;
+	}
+
 	void validateTimeStamp()
 	{
 		if (req_gmt_timestamp.isEmpty())
@@ -425,6 +456,7 @@ private:
 		req_local_timestamp = Firebird::TimeZoneUtil::timeStampTzToTimeStamp(
 			getTimeStampTz(), req_attachment->att_current_timezone);
 		req_timezone = req_attachment->att_current_timezone;
+		req_local_time_valid = false;
 	}
 };