Section 4(4)(i) in The Himachal Pradesh Tenancy And Land Reforms (Amendment) Act, 1987
(i)land, the classification of which has changed or has been caused to be changed to "Gair-mumkin", "Gair-mumkin-Makan" or any other Gair-mumkin land by whatever name called, during the past five years countable from the date of entry in the revenue records to this effect;