---
kind: "section"
citation: "43 C.F.R. § 4.1004"
title: "43"
number: "4.1004"
heading: "How are time periods computed?"
url: "https://uscodex.org/cfr/43/4.1004"
---

# §4.1004. How are time periods computed?

- (a) **General.** Time periods are computed as follows:
  - (1) **The day of the act or event from which the period begins to run is not included.**
  - (2) **The last day of the period is included.**
    - (i) If that day is a Saturday, Sunday, or other day on which the Federal government is closed for business, the period is extended to the next business day.
    - (ii) The last day of the period ends at 5 p.m. at the place where the filing or other action is due.
  - (3) If the period is less than 7 days, any Saturday, Sunday, or other day on which the Federal government is closed for business that falls within the period is not included.
- (b) **Extensions of time.**
  - (1) No extension of time can be granted to file a motion for intervention under [§ 4.1021](/cfr/43/4.1021.md).
  - (2) An extension of time to file any other document under this subpart may be granted only upon a showing of good cause.
    - (i) To request an extension of time, a party must file a motion under [§ 4.1018](/cfr/43/4.1018.md) stating how much additional time is needed and the reasons for the request.
    - (ii) The party must file the motion before the applicable time period expires, unless the party demonstrates extraordinary circumstances that justify a delay in filing.
    - (iii) The ALJ may grant the extension only if:
      - (A) It would not unduly prejudice other parties; and
      - (B) It would not delay the recommended decision under [§ 4.1051](/cfr/43/4.1051.md).

## Notes

### Authority

Authority: 5 U.S.C. 301; 25 U.S.C. 2, 9, 479a-1.

### Source

Source: 80 FR 48459, Aug. 13, 2015, unless otherwise noted.

### Authority

Authority: 5 U.S.C. 301, 503-504; 25 U.S.C. 9, 372-74, 410, 2201 et seq.; 43 U.S.C. 1201, 1457; Pub. L. 99-264, 100 Stat. 61, as amended.

### Source

Source: 36 FR 7186, Apr. 15, 1971, unless otherwise noted.