re: #435 Obdicut

Per the rules:

Hours of Operation
Persons may enter and use the parks from 6:00 a.m. until 1:00 a.m. unless other open hours are posted at any park.
Whenever a threat to public health or safety exists in any park resulting from any natural cause, explosion, accident or any other cause, or by riot or unlawful assembly or activity, the Commissioner may close the park or any part thereof to the public for such duration as he deems necessary to ensure the safety and well-being of the public.
No person shall enter or remain in any park without the permission of the Commissioner when such park is closed to the public.
Permits
When any provision of these Rules requires a permit as a condition to the performance of any act or activity, no such act or activity shall be implemented or commenced prior to the receipt of written authorization from the Commissioner or from his or her authorized representative.
A permit may be granted upon such terms and conditions as the Commissioner shall reasonably impose, and shall authorize the permitted acts or activities only insofar as they are performed in strict accordance with the terms and conditions thereof.
Permits shall be applied for on forms prepared and provided by the Department, which forms shall require such information as the Department may deem appropriate for the review and evaluation of the permit application. Procedures for issuance of special event and demonstration permits are governed by §2-08 of the Department’s rules. The Commissioner may require a fee for the issuance of a permit.
The Commissioner may require the permittee to post a bond in an amount sufficient to ensure full compliance with the terms and conditions of the permit. The decision of whether to require a bond will be based on the following factors:
The location of the event and such location’s vulnerability to damage;
Whether the event or any activities associated with the event present a high risk of property damage;
The number of people expected to be in attendance;
The type of equipment to be brought onto the site;
The number of days the permittee will occupy the site;
The season in which the event will take place.

Some parks have a dawn/dusk rule, but the general rule is that they’re closed overnight.