# The Insolvency (England and Wales) Rules 2016, Paragraph 2


(1) This paragraph applies for the calculation of periods expressed in months.
(2) The beginning and the end of a period expressed in months is to be determined as follows—
(a) if the beginning of the period is specified—
(i) the month in which the period ends is the specified number of months after the month in which it begins, and
(ii) the date in the month on which the period ends is—
(aa) the day before the date corresponding to the date in the month on which it begins, or
(bb) if there is no such date in the month in which it ends, the last day of that month;
(b) if the end of the period is specified—
(i) the month in which the period begins is the specified number of months before the month in which it ends, and
(ii) the date in the month on which the period begins is—
(aa) the day after the date corresponding to the date in the month on which it ends, or
(bb) if there is no such date in the month in which it begins, the last day of that month.

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Source: https://www.legislation.gov.uk/uksi/2016/1024/schedule/5/paragraph/2 (the official version)
Page: https://openlegislation.uk/insolvency-england-and-wales-rules-2016/schedule-5/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.