Site Feedback

Recent Changes

Updates for March 22, 2013

The Office of the Federal Register updates the material in the eCFR on a daily basis. While we do not make updates in real-time, generally the eCFR is current within two business days.

You can learn more about how the eCFR is updated here.

Reader Aids

Reader Aids help people use and understand the eCFR. Reader Aids information is not published in the Code of Federal Regulations.

Effective regulations inserted from the above-dated Federal Register:
  1. 21 CFR 510, 520, 522, 524, 529, 558
  2. 40 CFR 180
  3. 47 CFR 25
Regulations linked from the above-dated Federal Register:
  1. 40 CFR 49
Regulations inserted that were previously linked and became effective on the date listed above:
  1. 33 CFR 110 (78 FR 11747, February 20, 2013)
  2. 40 CFR 52 (78 FR 11750, February 20, 2013)
  3. 50 CFR 17 (78 FR 11788, February 20, 2013)