Notices must be received by us, the Police and Public Health Services at least 10 clear working days before the event is to take place in order for us to issue a Standard TEN.
Rhaid i ni, yr heddlu a gwasanaethau iechyd y cyhoedd dderbyn hysbysiadau o leiaf 10 diwrnod gwaith clir cyn i'r digwyddiad gael ei gynnal er mwyn inni gyflwyno TEN Safonol.