One of the best ways to introduce realisim is to have a day system or a clock, while I'm posting this at work most of this tutorial will be in part 2 with the RGSS2 portion of it, well just the drawing of the clock/day/and location.

For now, let's just setup our fab. lil system.

Variables needed.
variable[001]Day equal to 1
variable[002]Hour equal to 0
variable[003]Minute equal to 0
variable[004]Second equal to 0

Now for the actual coding.

//seconds
variable[004]Seconds [004] + 1
if condition branch [004] >=60
variable[003]Minute [003] + 1
variable[004]Second equal 0
end case
//minutes
if condition branch [003] >=60
variable[002]Hour [002] + 1
variable[003]Minute equal 0
end case
//hour
if condition branch [002] >=24
variable[001]Day [001] + 1
variable[002]Hour equal 0
end case
//day
if condition branch [001] >=7
variable[001]Day equal 1
end case

This takes care of all time in the game, and if you wanted you can even add months to the game and create a realistic weather system, the timer or clock system doesn't time itself like a real clock because 60/60 seconds is really 1 second so really 1 second=1 minute and 1 minute=1 hour and so on. so 24 minutes = 1 day, so 24X30 is 720 and you can figure out how many hrs that is ok it's 12 hours, so 36 hours is 1 year.

Later on I'll add the RGSS2 stuff which will draw the data onto the screen, and this is a great system for menus, you don't need to use rgss/2 for everything.

Most of this will work for XP but all the rgss/2 stuff won't because I use VX, not XP^^