Most new laws in California start on January 1 after a 90-day wait from when they're passed. If they're passed during a special session, they start on the 91st day after that session ends. However, some laws go into effect immediately, like those about elections, state expenses, or urgent matters.

This law section states that joint and concurrent resolutions become active as soon as they are filed with the Secretary of State.

This law section states that each set of laws comes with basic guidelines to help interpret its statutes. These guidelines are found in the early sections of each code.

This law says that if parts of an old law are moved into a new law without changing their meaning, any references to those parts will be considered references to the new law version unless it's clearly meant otherwise.

This law explains how changes to statutes are handled. If a part of a statute is amended, the unchanged parts are still considered law from their original enactment, while new parts are law from the amendment date. Omitted parts are seen as repealed when the amendment occurs. If two or more amendments happen during the same legislative session, any missing parts from earlier amendments are deliberate unless restored by a later amendment.

When two or more amendments happen at the same session, the last enacted amendment usually takes priority unless stated otherwise. Also, statutes with a higher chapter number override those with a lower number, with laws from even-numbered years seen as having higher chapter numbers than those from odd-numbered years within the same legislative session.

This law says that any law can be canceled or repealed at any time, unless doing so would harm someone's established rights. People who act under a law should expect that the law might be changed or repealed in the future.

This law explains how old laws can become active again. Generally, if a law has been canceled by another law, it doesn't automatically come back to life if the canceling law is also canceled. However, if a new law is made before the original law's end date that either deletes or changes the end date, the original law becomes active again when the new law starts.

If a law that defines a criminal offense is ended or put on hold, it does not stop someone from being charged or punished for breaking that law while it was active. This is true unless another law clearly says those charges or punishments should not happen.

If a law tries to change a rule that's already been completely canceled or removed from the books, that change is not valid or enforceable.

This law explains that deciding on the salary of a state employee or officer through a statute doesn't automatically provide the money for it. The salary will only be paid if there is another law that allocates the necessary funds.

This law says that if a rule is temporarily paused or changed, the original rule isn’t permanently gone. Once the temporary change ends, the original rule comes back into effect just as it was before.

This law section clarifies that any time a California statute mentions the 'United States Army,' 'Army of the United States,' 'United States Navy,' or 'military service,' it's also including the 'United States Air Force,' unless the context specifically states otherwise.