commit - 788c352e1f3b00dfa5628e7ccfcfb056433c1948
commit + 4bb494d57939f42bed86833b18d100c54b234533
blob - a80083bfb47f68f00c32b5b01618c6fbc9aa66a7
blob + cdf523b6507a59b3fd3dda104d5d87083b7af51c
--- got/got.c
+++ got/got.c
@@ -306,7 +306,7 @@ print_patch(struct got_commit_object *commit, struct g
 	return err;
 }
 
-char *
+static char *
 get_datestr(time_t *time, char *datebuf)
 {
 	char *p, *s = ctime_r(time, datebuf);
blob - 2bfa94efc96d98d4217ff31fdc7f3eef4ff8b729
blob + 94feecd2d6cb9b1250f7594b6f9f27977135dfa6
--- lib/diff.c
+++ lib/diff.c
@@ -497,6 +497,16 @@ done:
 	if (tree2)
 		got_object_tree_close(tree2);
 	return err;
+}
+
+static char *
+get_datestr(time_t *time, char *datebuf)
+{
+	char *p, *s = ctime_r(time, datebuf);
+	p = strchr(s, '\n');
+	if (p)
+		*p = '\0';
+	return s;
 }
 
 const struct got_error *
@@ -507,6 +517,8 @@ got_diff_objects_as_commits(struct got_object *obj1, s
 	struct got_commit_object *commit1 = NULL, *commit2 = NULL;
 	struct got_object *tree_obj1  = NULL, *tree_obj2 = NULL;
 	char *id_str;
+	char datebuf[26];
+	time_t time;
 
 	if (obj2 == NULL)
 		return got_error(GOT_ERR_NO_OBJ);
@@ -535,12 +547,16 @@ got_diff_objects_as_commits(struct got_object *obj1, s
 		goto done;
 	}
 	free(id_str);
-	if (fprintf(outfile, "author: %s\n", commit2->author) < 0) {
+	time = mktime(&commit2->tm_author);
+	if (fprintf(outfile, "author: %s  %s UTC\n", commit2->author,
+	    get_datestr(&time, datebuf)) < 0) {
 		err = got_error_from_errno();
 		goto done;
 	}
+	time = mktime(&commit2->tm_committer);
 	if (strcmp(commit2->author, commit2->committer) != 0 &&
-	    fprintf(outfile, "committer: %s\n", commit2->committer) < 0) {
+	    fprintf(outfile, "committer: %s  %s UTC\n", commit2->committer,
+	    get_datestr(&time, datebuf)) < 0) {
 		err = got_error_from_errno();
 		goto done;
 	}