diff --git a/src/gr-recipe-exporter.c b/src/gr-recipe-exporter.c
index e7b7a97..d7657c2 100644
--- a/src/gr-recipe-exporter.c
+++ b/src/gr-recipe-exporter.c
@@ -157,18 +157,6 @@ decide_dest_cb (AutoarCompressor *compressor,
         g_set_object (&exporter->dest, file);
 }
 
-static char *
-date_time_to_string (GDateTime *dt)
-{
-        return g_strdup_printf ("%d-%d-%d %d:%d:%d",
-                                g_date_time_get_year (dt),
-                                g_date_time_get_month (dt),
-                                g_date_time_get_day_of_month (dt),
-                                g_date_time_get_hour (dt),
-                                g_date_time_get_minute (dt),
-                                g_date_time_get_second (dt));
-}
-
 static gboolean
 prepare_export (GrRecipeExporter  *exporter,
                 GError           **error)
diff --git a/src/gr-recipe-importer.c b/src/gr-recipe-importer.c
index f93cbe2..089a3df 100644
--- a/src/gr-recipe-importer.c
+++ b/src/gr-recipe-importer.c
@@ -94,48 +94,6 @@ gr_recipe_importer_new (GtkWindow *parent)
         return importer;
 }
 
-static GDateTime *
-date_time_from_string (const char *string)
-{
-        g_auto(GStrv) s = NULL;
-        g_auto(GStrv) s1 = NULL;
-        g_auto(GStrv) s2 = NULL;
-        int year, month, day, hour, minute, second;
-        char *endy, *endm, *endd, *endh, *endmi, *ends;
-
-        s = g_strsplit (string, " ", -1);
-        if (g_strv_length (s) != 2)
-                return NULL;
-
-        s1 = g_strsplit (s[0], "-", -1);
-        if (g_strv_length (s1) != 3)
-                return NULL;
-
-        s2 = g_strsplit (s[1], ":", -1);
-        if (g_strv_length (s1) != 3)
-                return NULL;
-
-        year = strtol (s1[0], &endy, 10);
-        month = strtol (s1[1], &endm, 10);
-        day = strtol (s1[2], &endd, 10);
-
-        hour = strtol (s2[0], &endh, 10);
-        minute = strtol (s2[1], &endmi, 10);
-        second = strtol (s2[2], &ends, 10);
-
-        if (!*endy && !*endm && !*endd &&
-            !*endh && !*endmi && !*ends &&
-            0 < month && month <= 12 &&
-            0 < day && day <= 31 &&
-            0 <= hour && hour < 24 &&
-            0 <= minute && minute < 60 &&
-            0 <= second && second < 60)
-                    return g_date_time_new_utc (year, month, day,
-                                                hour, minute, second);
-
-        return NULL;
-}
-
 static void
 cleanup_import (GrRecipeImporter *importer)
 {
diff --git a/src/gr-recipe-store.c b/src/gr-recipe-store.c
index 64e9e45..22df5b6 100644
--- a/src/gr-recipe-store.c
+++ b/src/gr-recipe-store.c
@@ -69,60 +69,6 @@ gr_recipe_store_finalize (GObject *object)
         G_OBJECT_CLASS (gr_recipe_store_parent_class)->finalize (object);
 }
 
-static char *
-date_time_to_string (GDateTime *dt)
-{
-        return g_strdup_printf ("%d-%d-%d %d:%d:%d",
-                                g_date_time_get_year (dt),
-                                g_date_time_get_month (dt),
-                                g_date_time_get_day_of_month (dt),
-                                g_date_time_get_hour (dt),
-                                g_date_time_get_minute (dt),
-                                g_date_time_get_second (dt));
-}
-
-static GDateTime *
-date_time_from_string (const char *string)
-{
-        g_auto(GStrv) s = NULL;
-        g_auto(GStrv) s1 = NULL;
-        g_auto(GStrv) s2 = NULL;
-        int year, month, day, hour, minute, second;
-        char *endy, *endm, *endd, *endh, *endmi, *ends;
-
-        s = g_strsplit (string, " ", -1);
-        if (g_strv_length (s) != 2)
-                return NULL;
-
-        s1 = g_strsplit (s[0], "-", -1);
-        if (g_strv_length (s1) != 3)
-                return NULL;
-
-        s2 = g_strsplit (s[1], ":", -1);
-        if (g_strv_length (s1) != 3)
-                return NULL;
-
-        year = strtol (s1[0], &endy, 10);
-        month = strtol (s1[1], &endm, 10);
-        day = strtol (s1[2], &endd, 10);
-
-        hour = strtol (s2[0], &endh, 10);
-        minute = strtol (s2[1], &endmi, 10);
-        second = strtol (s2[2], &ends, 10);
-
-        if (!*endy && !*endm && !*endd &&
-            !*endh && !*endmi && !*ends &&
-            0 < month && month <= 12 &&
-            0 < day && day <= 31 &&
-            0 <= hour && hour < 24 &&
-            0 <= minute && minute < 60 &&
-            0 <= second && second < 60)
-                    return g_date_time_new_utc (year, month, day,
-                                                hour, minute, second);
-
-        return NULL;
-}
-
 static gboolean
 load_recipes (GrRecipeStore *self,
               const char    *dir)
diff --git a/src/gr-utils.c b/src/gr-utils.c
index ccf45a6..603d6cd 100644
--- a/src/gr-utils.c
+++ b/src/gr-utils.c
@@ -20,6 +20,8 @@
 
 #include "config.h"
 
+#include <stdlib.h>
+
 #include "gr-utils.h"
 
 /* load image rotated by angle to fit in width x height while preserving
@@ -231,3 +233,57 @@ gr_utils_widget_set_css_simple (GtkWidget *widget,
         gr_utils_widget_set_css_internal (widget, class_name, str->str);
 }
 
+char *
+date_time_to_string (GDateTime *dt)
+{
+        return g_strdup_printf ("%d-%d-%d %d:%d:%d",
+                                g_date_time_get_year (dt),
+                                g_date_time_get_month (dt),
+                                g_date_time_get_day_of_month (dt),
+                                g_date_time_get_hour (dt),
+                                g_date_time_get_minute (dt),
+                                g_date_time_get_second (dt));
+}
+
+GDateTime *
+date_time_from_string (const char *string)
+{
+        g_auto(GStrv) s = NULL;
+        g_auto(GStrv) s1 = NULL;
+        g_auto(GStrv) s2 = NULL;
+        int year, month, day, hour, minute, second;
+        char *endy, *endm, *endd, *endh, *endmi, *ends;
+
+        s = g_strsplit (string, " ", -1);
+        if (g_strv_length (s) != 2)
+                return NULL;
+
+        s1 = g_strsplit (s[0], "-", -1);
+        if (g_strv_length (s1) != 3)
+                return NULL;
+
+        s2 = g_strsplit (s[1], ":", -1);
+        if (g_strv_length (s1) != 3)
+                return NULL;
+
+        year = strtol (s1[0], &endy, 10);
+        month = strtol (s1[1], &endm, 10);
+        day = strtol (s1[2], &endd, 10);
+
+        hour = strtol (s2[0], &endh, 10);
+        minute = strtol (s2[1], &endmi, 10);
+        second = strtol (s2[2], &ends, 10);
+
+        if (!*endy && !*endm && !*endd &&
+            !*endh && !*endmi && !*ends &&
+            0 < month && month <= 12 &&
+            0 < day && day <= 31 &&
+            0 <= hour && hour < 24 &&
+            0 <= minute && minute < 60 &&
+            0 <= second && second < 60)
+                    return g_date_time_new_utc (year, month, day,
+                                                hour, minute, second);
+
+        return NULL;
+}
+
diff --git a/src/gr-utils.h b/src/gr-utils.h
index 9354c04..21f7ef8 100644
--- a/src/gr-utils.h
+++ b/src/gr-utils.h
@@ -42,4 +42,7 @@ void    container_remove_all (GtkContainer *container);
 void gr_utils_widget_set_css_simple (GtkWidget  *widget,
                                      const char *css);
 
+char      * date_time_to_string   (GDateTime *dt);
+GDateTime * date_time_from_string (const char *string);
+
 G_END_DECLS