There are many MANY maps for Hi-Res Adventure #5: Time Zone, namely nearly all combinations of continents and time zones. Only exceptions are 400MIL BC and 10000BC where continents had not yet drifted apart (according to the game at least) and are therefore the same maps for all continents. Also Interplanetary (IP) is only accessible in the 4082AD time zone. The maps of Antarctica are not displayed as it consists of a single screen for all time zones and nothing is found there - leaving the screen in any direction leads to instant death.
Home
Your starting point in the game and final destination after you've destroyed the giant ray machine on Nebulon. Occasionally you'll pass here during the game to temporarily drop off some inventory items to prevent losing them by going back in time.
Items found: gas mask
400 Million BC
Continents have not yet formed and therefore all destinations lead to the same map.
Items found: Pointed stick
10000 BC
Continents have not yet formed and therefore all destinations lead to the same map.
Items found: Rock, hare, sticks, hammer
Items needed: Rock, hare, sticks, pointed stick (400MILBC)
Items found (first visit): Mirror
Items found (second visit): Bag of money, lance
Items needed (second visit): Bow and Arrows (America 1400AD), Rope (Asia 50BC), Bag of money, Boomerang (Australia 1000AD)
North America
Nothing to be found here except for a dangerous Mayans. Map can be skipped.