Calendar coordinators (of which I am one) urge organizations of all kinds ― nonprofits, DC government, federal government, civic associations, loose groups of neighbors ― to submit public event information so that the event can be added to the calendar and promoted on Twitter. There is absolutely no charge for this. The calendar is maintained as a public service, from one neighbor to another.
Organizations do not need to have an office in Wards 7 or 8 for their event to be included. Only the event has to take place #eotr.