(a) Computing Time. In computing any period of time prescribed or allowed by these rules, by order of the Agency, or by any applicable statute, the period shall begin on the day after the act, event, or default in controversy and conclude on the last day of such computed period, unless it be a Saturday, Sunday, or a legal holiday, in which event, the period runs until the end of the next day which is neither a Saturday, Sunday, nor a legal holiday. A party or attorney of record notified under §401.61 of this title (relating to Record) is deemed to have been notified on the date which notice is sent.
(b) Extensions. Unless otherwise provided by statute, the time for filing any pleading, except a notice of protest, may be extended by order of the Agency Chief or designee, upon the following conditions:
  (1) A written motion must be duly filed with the Agency Chief or designee prior to the expiration of the applicable period of time allowed for such filings.
  (2) The written motion must show good cause for such extension and that the need is not caused by the neglect, indifference, or lack of diligence on the part of the movant.
  (3) A copy of any such motion shall be served upon all other parties of record to the proceeding contemporaneously with the filing thereof.

Source Note: The provisions of this §401.13 adopted to be effective March 8, 2001, 26 TexReg 2040; amended to be effective July 19, 2007, 32 TexReg 4443; amended to be effective December 18, 2012, 37 TexReg 9778; amended to be effective January 11, 2023, 48 TexReg 51