Indiana Code Title 4. State Offices and Administration § 4-21.5-3-2

Sec. 2. (a) In computing any period of time under this article, the day of the act, event, or default from which the designated period of time begins to run is not included.  The last day of the computed period is to be included unless it is:

(b) A period runs until the end of the next day after a day described in subsection (a)(1) through (a)(4).  If the period allowed is less than seven (7) days, intermediate Saturdays, Sundays, state holidays, and days on which the office in which the act is to be done is closed during regular business hours are excluded from the calculation.

(c) A period of time under this article that commences when a person is served with a paper, including the period in which a person may petition for judicial review, commences with respect to a particular person on the earlier of the date that:

(d) If section 1(f) of this chapter applies, a period of time under this article commences when a notice for the person is published in a newspaper.

(e) If a notice is served through the United States mail, three (3) days must be added to a period that commences upon service of that notice.