Law and its Chronological Validity with an Emphasis on Temporary Law

Temporary act (or law) is a law which its validity terminates by termination of period that is determined in the same act. So, this law is rescinded without enacting a “repealing act”. Non-temporary acts are rescinded only by enacting repealing acts. Although the legislator can repeal temporary laws in the period of their validity, he can repeal all laws in any time. Because the validity of laws is not an eternal matter. Inside of temporary and non-temporary acts there are circumstantial laws; some acts are depend circumstances for which they were enacted. Thus by termination of those circumstances those laws may not be enforced. As such these types of laws are in fact temporary; albeit their validity period is not determined. But circumstantial and temporary acts are rescinded by expiring their period and without enacting repealing law. Therefore, those laws may not be forced by termination of those circumstances.