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Further Information

The official language of the 33rd International Symposium on Rarefied Gas Dynamics (RGD33) is English.

Passport and Visa

A valid passport is required for non-EU citizens for entry into GERMANY and the European Union. An identity card is sufficient
for citizens of EU Member States. Please consult your Consulate for details.

Travel planning and early visa application are important, since visa applications have become subject to a greater degree of scrutiny than
in the past. It is strongly suggested that all attendees contact their local embassy to determine the travel documents they will need to visit Germany.

If you do need a visa to attend the Symposium, please apply as soon as possible!

For more information on the requirements for travel to Germany, please visit the following websites:

German Federal Foreign Office

Germany Visa Information


Letter of Invitation

The organising committee of the symposium will send you a letter of invitation upon separate request. The organising committee
expressly points out that this letter is only intended to assist participants in applying for a visa or in their efforts to raise travel funds.

The invitation letter does not imply any financial obligation on the part of the Symposium towards the participants.

All participants of the 33rd International Symposium on Rarefied Gas Dynamics (RGD33) who require a letter of invitation to apply for a visa should request one during the online registration process. Letters of invitation will only be issued upon receipt of registration and
payment of the required registration fees.

Should your visa application be declined, you can send a request for a full refund of the registration fees before 15 June 2024. A scanned copy of the rejection letter for a visa should be attached to your request for a refund. For requests after 15 June 2024,the cancellation policy will apply.


The registration fee does not include the participant's insurance against accident, illness, cancellation, theft, property damage or loss.
Participants are advised to take out appropriate personal insurance.

Mobile device etiquette

Out of courtesy to other participants, please switch off your mobile phone and other wireless communication devices when attending sessions or use the silent notification options. If you need to take a call, please leave the room so as not to disrupt the event. Thank you for your co-operation!

Registration and Conference Office

The registration desk will be located in the entrance area of venue "Alte Mensa", from Monday the 15th to Friday the 19th of July 2024. On Monday, 08:00 - 10:00 the registration desk will temporarily move to the Assembly Hall. An early check-in opportunity is available on Sunday, July 14, at the FREIgeist hotel near the railway station (Event kitchen, ground floor).

Opening Hours  
Sunday, July 14, 2024 14:00 - 18:00
Monday, July 15, 2024 08:00 - 17:30
Tuesday, July 16, 2024 08:30 - 18:00 
Wednesday, July 17, 2024 08:00 - 11:00 
Thursday, July 18, 2024 08:30 – 17:30
Friday, June 26, 2024 08:00 – 12:00 


The Venue offers WiFi to all event participants. Passwords will be announced on-site. 


The German currency is EURO. Most hotels, restaurants and shops accept international credit cards.


Germany operates on 220-240 Volts, 50Hz electricity. The primary socket types are C & F.


Important telephone numbers

In case of an emergency, please contact:

Police: 110
Fire brigade: 112
Emergency doctor/ ambulance: 112


Telephone information service:

Tel: 11833 (national)
Tel: 11834 (international)