Etrian Odyssey has an in-game time shown in the top left corner of the upper screen with a graphical spinner and a number beside it. There are various game events that are affected by the current game time. The game advances one hour every 30 steps taken on the map or turns taken in battle, or 2 hours for every turn at sea.
Day/Night Cycle[]
Etrian Odyssey I and II[]
| Period | Time |
|---|---|
| Morning | 5AM - 9AM |
| Day | 10AM - 3PM |
| Evening | 4PM - 5PM |
| Night | 6PM - 4AM |
Etrian Odyssey III and Onwards[]
| Period | Time |
|---|---|
| Morning | 7 AM - 9 AM |
| Day | 10 AM - 3 PM |
| Evening | 4 PM - 6 PM |
| Night | 7 PM - 6 AM |
Calendar[]
The calendar system was introduced in Etrian Odyssey II. Whenever you enter the main menu, next to it you will be presented with a name and a number: The name represents the month, and the number is the current day of that month. Most of the months have a Chinese zodiacal motif, and all months have 28 days except Summoner, which has only 1 day. 28*13+1=365 days.
There is no known use for the calendar system beyond keeping track of the time, waiting for FOEs or bosses to respawn.
| Month | Meaning | Color (EO3 onwards) | Period | # |
|---|---|---|---|---|
| Emperor | Emperor | Blue | January 1 - January 28 | 28 |
| Dormouse | Rat | Lemon | January 29 - February 25 | 28 |
| Taurus | Ox | Lemon | February 26 - March 25 | 28 |
| Tiger | Tiger | Lemon | March 26 - April 22 | 28 |
| Lapin | Rabbit | Green | April 23 - May 20 | 28 |
| Uroboros | Dragon | Green | May 21 - June 17 | 28 |
| Serpent | Snake | Green | June 18 - July 15 | 28 |
| Stallion | Horse | Orange | July 16 - August 12 | 28 |
| Aries | Sheep | Orange | August 13 - September 9 | 28 |
| Capuchin | Monkey | Orange | September 10 - October 7 | 28 |
| Phoenix | Rooster | White | October 8 - November 4 | 28 |
| Demiurge | Dog | White | November 5 - December 2 | 28 |
| Khrysaor | Pig | White | December 3 - December 30 | 28 |
| Summoner | Demon | Crimson | December 31 | 1 |