app/assets/images/open_iconic/calendar.svg
<svg xmlns="http://www.w3.org/2000/svg" width="8" height="8" viewBox="0 0 8 8">
<path d="M0 0v2h7v-2h-7zm0 3v4.91c0 .05.04.09.09.09h6.81c.05 0 .09-.04.09-.09v-4.91h-7zm1 1h1v1h-1v-1zm2 0h1v1h-1v-1zm2 0h1v1h-1v-1zm-4 2h1v1h-1v-1zm2 0h1v1h-1v-1z" />
</svg>