diff --git a/firmware/inc/osp_messages.h b/firmware/inc/osp_messages.h
index 09e948a..2f2f35d 100644
--- a/firmware/inc/osp_messages.h
+++ b/firmware/inc/osp_messages.h
@@ -461,6 +461,34 @@ enum osp_oktosend {
   } __PACKED__ payload;
 };
 
+
+/**
+ * 6.42 OSP 1PPS Time
+ */
+#define OSP_OUT_1PPS_TIME_ID 52
+ struct osp_out_1pps_time {
+  osp_message_id_t id;
+  enum osp_packet_state state;
+  uint16_t max_payload_size;
+  struct {
+    uint8_t hour;
+    uint8_t minute;
+    uint8_t second;
+    uint8_t day;
+    uint8_t month;
+    uint16_t year;
+    int16_t utc_offset_int;     /* s. gps offset from utc  */
+    uint32_t utc_offset_frac;   /* ns */
+    uint8_t status;             /* enum osp_1pps_status */
+  } __PACKED__ payload;
+};
+enum osp_1pps_status {
+  OSP_1PPS_VALID	= (1<<0),
+  OSP_1PPS_IS_UTCTIME	= (1<<1), /* otherwise gps time */
+  OSP_1PPS_OFFSET_VALID	= (1<<2),
+};
+
+
 /**
  * 6.55 OSP GPIO State
  */
diff --git a/firmware/src/gps_osp.c b/firmware/src/gps_osp.c
index 526d5dd..9dd077d 100644
--- a/firmware/src/gps_osp.c
+++ b/firmware/src/gps_osp.c
@@ -95,6 +95,11 @@ volatile struct osp_out_geodetic_navigation_data osp_out_geodetic_navigation_dat
   .state	= OSP_PACKET_WAITING,
   .max_payload_size = sizeof(osp_out_geodetic_navigation_data.payload)
 };
+volatile struct osp_out_1pps_time osp_out_1pps_time = {
+  .id		= OSP_OUT_1PPS_TIME_ID,
+  .state	= OSP_PACKET_WAITING,
+  .max_payload_size = sizeof(osp_out_1pps_time.payload)
+};
 volatile struct osp_out_gpio_state osp_out_gpio_state = {
   .id		= OSP_OUT_GPIO_STATE_ID,
   .state	= OSP_PACKET_WAITING,
@@ -125,6 +130,7 @@ volatile osp_message_t* const osp_out_messages[] = {
   (osp_message_t*)&osp_out_ephemeris_data,
   (osp_message_t*)&osp_out_oktosend,
   (osp_message_t*)&osp_out_geodetic_navigation_data,
+  (osp_message_t*)&osp_out_1pps_time,
   (osp_message_t*)&osp_out_gpio_state,
   (osp_message_t*)&osp_out_hw_config_req,
   (osp_message_t*)&osp_out_aiding_request,