Venti's default calendar output for quick calendars.

default_calendar.twig

{# Getting the current month or year if no month or year are passed as url params #}
{% set currentMonth = craft.request.getParam('m') ? craft.request.getParam('m') : "now"|date('n') %}
{% set currentYear = craft.request.getParam('y') ? craft.request.getParam('y') : "now"|date('Y') %}
{# Getting the first day of the currentMonth & currentYear for point of refrence to obtain next month and next year #}
{% set cur = currentYear  ~ "-" ~ currentMonth ~ "-1" %}
{% set prevMonth = cur|date_modify("last day of last month")|date('U') %}
{% set nextMonth = cur|date_modify("first day of next month")|date('U') %}
{# Obtaining the events for the calendar #}
{% set events = craft.venti.allEvents().startDate('and', '>= ' ~ prevMonth, '<= ' ~ nextMonth).find() %}
{% set cal = craft.venti.getCal(events,currentMonth,currentYear) %}
{# Output of the calendar #}
<div class="table-box">
  {{ cal|raw }}
</div>