time2str
sz = append_string(context, sp, "%s:%s ", time2str(ev->time),
append_string(context, sp, "%s ", time2str(*ent->valid_start));
append_string(context, sp, "%s ", time2str(*ent->valid_end));
append_string(context, sp, "%s ", time2str(*ent->pw_end));
append_string(context, sp, "%s:%d:%d ", time2str(ent->generation->time),