Conservation law, also called law of conservation, in physics, several principles that state that certain physical properties (i.e., measurable quantities) do not change in the course of time within an isolated physical system. In classical physics, laws of this type govern energy, momentum, angular momentum, mass, and electric charge.
On New Yearâs Eve, the Metrorail system will open at 7 a.m. with special extended service on all lines until 3 a.m. The additional three hours of service â consistent with past years â is a special exception to a moratorium on extended hours during the year-long SafeTrack maintenance program.
On almost any Saturday of the year Disneyland will be open from 8:00 a.m. until midnight, and DCA will be open from 10:00 a.m. to 9:00 p.m. On non-holiday weekdays during the off-season (September after Labor Day through May) the parks have shorter hours - typically 10:00 a.m. to 8:00 p.m. for Disneyland and 10:00 a.m. to 6:00 p.m. for DCA. These hours are guidelines only - please check with Disneyland to verify the actual operating hours before your trip at 714-781-4565.