Open the Ultima Ascension folder, and find the file called default.kmp. Now open the file with a NotePad and add the following line: ''[Cheat Commands]'': (Copy and Paste these)

alt+shift+b = pass_one_hour
alt+shift+d = sunrise_sunset
alt+shift+e = pass_one_minute
alt+shift+f = unpass_one_minute
alt+shift+k = toggle_avatar_fly
alt+shift+a = toggle_avatar_invulnerable
alt+shift+g = toggle_sun
alt+shift+h = toggle_wind
alt+shift+i = toggle_storms
alt+shift+c = unpass_one_hour
alt+shift+j = toggle_avatar_fast

Once you have pasted them, save the file. Now, when you start up the game, to activate these cheats, press:

ALT+SHIFT+x

Replace x with the following cheats you want on:

b- pass one hour
d- sunrise_sunset
e- pass_one_minute
f- unpass_one_minute
k- toggle_avatar_fly
a- toggle_avatar_invulnerable
g- toggle_sun
h- toggle_wind
i- toggle_storms
c- unpass_one_hour
j- toggle_avatar_fast

You can always turn off these cheats anytime by entering them again.