Deuteronomy 1:1 & 2

"These are the words Moses spoke to all Israel in the wilderness east of the Jordan - that is, in the Arabah  - opposite Suph, between Paran and Tophel, Laban, Hazeroth and Dizahab. (It takes eleven days to go from Horeb to Kadesh Barnea by the Mount Seir road.)" NIV translation

We get the location of these events and see that they are just opposite of the promised land. It is also noted that their journey from Mt Sinai to this point should have taken eleven days but, in fact, had taken about thirty-eight-years.

Deuteronomy 1:3 - 5

"In the fortieth year, on the first day of the eleventh month, Moses proclaimed to the Israelites all that the Lord had commanded him concerning them. This was after he had defeated Sihon king of the Amorites, who reigned in Heshbon, and at Edrei had defeated Og king of Bashan, who reigned in Ashtaroth. East of the Jordan in the territory of Moab, Moses began to expound this law saying:" NIV translation

We get the exact timing of Moses' farewell address and the fact that he did not get to enter the promised land is stressed. The Israelites had achieved military victories on the east side of the Jordan and were preparing to invade the west and the land of Canaan.

Deuteronomy 1:6 - 8

"The Lord our God said to us at Horeb, 'You have stayed long enough at this mountain. Break camp and advance into the hill country of the Amorites; go to all the neighboring peoples in the Arabah, in the mountains, in the western foothills, in the Negev and along the coast, to the land of the Canaanites and to Lebanon, as far as the great river, the Euphrates. See, I have given you this land. Go in and take possession of the land the Lord swore he would give to your fathers - to Abraham, Isaac and Jacob - and to their descendants after them.'" NIV translation

Moses begins his address to the people by calling them to remember the words of God. He reminded them that their possession of the land of Canaan had been promised to their fathers and was being fulfilled to them.