Day and Night System

The Day and Night System is a Virtual Clock, a cyclical time system within the game that simulates a 24-hour cycle. It is completely independent of real-life time, designed to bring more life to the game and create a more dynamic environment. This system is more focused on specific situations, rather than spread throughout the game. It is a feature that gives more personality to certain areas and missions, rather than blocking or hindering the player's progress. The Virtual Clock is also integrated with other game systems, such as the Johto Brotherhood, where contract NPCs change from time to time based on this cycle.

It works as follows:

Day: from 6 a.m. to 6 p.m. (in-game time);
Night: from 6 p.m to 6 a.m. (in-game time);
A complete cycle (24 hours in-game) takes 4 hours in real time. Therefore, the daytime period in-game lasts 2 hours in real time, and the nighttime period in-game also lasts 2 hours in real time.

The in-game time can be viewed in the upper left corner of the map, as shown in the image below.

ATTENTION: There is no visual change in the environment during the time change. For example, the streets will not become darker at night or lighter during the day. The ambient effects applied in some locations should not be confused with the Virtual Clock system. These ambient effects can be enabled or disabled by changing their intensity through the game settings window (Shortcut O > Graphics > Shader intensity).

Pokémon with specific spawn times

On the Johto continent, some Pokémon can be found at specific times, as follows:

Original spawn	Possible during the day			Possible during the night
Pidgey	Shiny Pidgey			Pidgey	Hoothoot	Shiny Hoothoot
Hoppip	Shiny Hoppip			Hoppip		Kricketot
Sunkern	Shiny Sunkern			Sunkern	Oddish	Shiny Oddish
Ledyba	Shiny Ledyba			Ledyba	Spinarak	Shiny Spinarak
Ledian	Shiny Ledian			Ledian		Ariados
Spearow	Shiny Spearow			Spearow	Zubat	Shiny Zubat
Cleffa	Clefairy	Jigglypuff	Shiny Jigglypuff	Shiny Clefairy
Clefable	Clefable	Wigglytuff	Shiny Wigglytuff	Shiny Clefable

Note: These appearances at specific times occur ONLY in the Johto region. This does not mean that these Pokémon cannot be found in other regions, only that in this location, they are more likely to appear at certain times.