diff --git a/src/gswe-timestamp.c b/src/gswe-timestamp.c
index 19c0823..ecbd8a8 100644
--- a/src/gswe-timestamp.c
+++ b/src/gswe-timestamp.c
@@ -368,6 +368,26 @@ gswe_timestamp_get_instant_recalc(GsweTimestamp *timestamp)
     return timestamp->priv->instant_recalc;
 }
 
+void
+gswe_timestamp_set_gregorian_full(GsweTimestamp *timestamp, gint year, gint month, gint day, gint hour, gint minute, gint second, gint microsecond, gdouble time_zone_offset)
+{
+    timestamp->priv->gregorian_year = year;
+    timestamp->priv->gregorian_month = month;
+    timestamp->priv->gregorian_day = day;
+    timestamp->priv->gregorian_hour = hour;
+    timestamp->priv->gregorian_minute = minute;
+    timestamp->priv->gregorian_second = second;
+    timestamp->priv->gregorian_microsecond = microsecond;
+    timestamp->priv->gregorian_timezone_offset = time_zone_offset;
+    timestamp->priv->valid_dates = VALID_GREGORIAN;
+
+    if (timestamp->priv->instant_recalc == TRUE) {
+        gswe_timestamp_calculate_all(timestamp);
+    }
+
+    gswe_timestamp_emit_changed(timestamp);
+}
+
 void
 gswe_timestamp_set_gregorian_year(GsweTimestamp *timestamp, gint gregorian_year)
 {
diff --git a/src/gswe-timestamp.h b/src/gswe-timestamp.h
index 2161f92..1675fcd 100644
--- a/src/gswe-timestamp.h
+++ b/src/gswe-timestamp.h
@@ -58,6 +58,7 @@ GType gswe_timestamp_get_type(void);
 GsweTimestamp *gswe_timestamp_new(void);
 GsweTimestamp *gswe_timestamp_new_from_julian_day(gdouble julian_day);
 GsweTimestamp * gswe_timestamp_new_from_gregorian_full(gint year, gint month, gint day, gint hour, gint minute, gint second, gint microsecond, gdouble time_zone_offset);
+void gswe_timestamp_set_gregorian_full(GsweTimestamp *timestamp, gint year, gint month, gint day, gint hour, gint minute, gint second, gint microsecond, gdouble time_zone_offset);
 void gswe_timestamp_set_instant_recalc(GsweTimestamp *timestamp, gboolean instant_recalc);
 gboolean gswe_timestamp_get_instant_recalc(GsweTimestamp *timestamp);
 void gswe_timestamp_set_gregorian_year(GsweTimestamp *timestamp, gint gregorian_year);