Convention 2019
Convention 2019
Convention 2019


Sigma’s 45th Biennial Convention will take place at the Gaylord National Resort & Convention Center in National Harbor, Maryland, USA, (Washington, DC) from 16‑20 November 2019. Please read the following information to help ensure a safe trip.

Hotel Information

Note: The deadline has passed for Sigma's special guest room pricing at the Gaylord National Resort. Room availability is limited. You can still make reservations by clicking the button below, but we can no longer guarantee the group rate. If calling in your reservation, be sure to mention the Sigma 45th Biennial Convention.

Make your reservations »


  • Guest room rates include a resort fee and are subject to applicable taxes.
  • Guest room reservations are available on a first-come, first-served basis.

Gaylord National Resort

Gaylord National Resort

Travel Information

Please read the following travel information to help ensure a safe and enjoyable trip.



Ronald Reagan Washington National Airport (DCA) (6.9 miles)

Washington Dulles International Airport (IAD) (32.3 miles)

Baltimore/Washington International Thurgood Marshall Airport (BWI) (42 miles)

Ground Transportation

There are many options available for transportation to and from the airport, including shuttles and taxis. Please visit the web page of your destination airport above for the best options.

Uber and Lyft also service the DC area.

Event Attire
The attire for this event is business casual.
Information for International Attendees

View information regarding entry requirements to the USA, customs, foreign consulates, and transportation security from the US Department of State.


In emergency situations, you can reach local police, ambulance service, fire department, and other emergency services by calling 911.

Time Zones

The time zone in Washington, DC, is Eastern Standard Time (EST).

Visiting the DC Area

General Information

Local Area Maps

Money and Tipping

Electricity and Voltage

Traveling Abroad

Visit your country’s government website for information about and recommendations for traveling to the USA. When traveling outside your home country, it is recommended that you register with your embassy or consulate by notifying that office of your travel dates and destination.

Visa Letter Request

Your request will be processed within 10 business days. Requests for confirmation letters must be submitted by 23 October 2019. Requests for mailed letters will be reviewed, and additional fees will apply. The confirmation letter does not guarantee that you will receive a visa. Confirmation letters include only the event title, the dates, the location, the payment confirmation of registration fees, and verification that you are a presenter, if applicable.

If you are denied a visa, we will provide you with a full refund as long as we are notified before Thursday, 24 October 2019. Attendees are advised to apply for a visa as early as possible.

Submit your Visit Letter Request Application »