Do you use Google Calendar? If so, you can easily integrate conference and national events with your existing calendar. Google Calendar is free, and syncronization with many other calendar systems including Microsoft Outlook, iPhone, Android devices, etc. is possible. You can create a free account at calendar.google.com.
Heartland Conference maintains four calendars: Heartland calendar, Heartland Discipleship Ministries calendar, IPHC calendar, and IPHC Discipleship Ministries calendar. To integrate with your existing calendar, click on the calendar link for each calendar you want to display. While viewing each calendar click the button.