If you want to skip in increments, e.g. by the hour, by the day, by a day and a half, and so forth, I suggest the following:
Choose the channel from the Guide.
Then insert the number of hours you wish to skip. If you want to go forward that number of hours, press the right arrow button. If you want to skip back after you've gone forward, select the number of hours to go back, and press the left arrow button.
To get to the end of the guide, insert 400 as the number of hours and press the right arrow button.
You have to choose the number of hours immediately after you have chosen the channel or the number you insert will be read as a channel number instead of a forward or backward movement number.
Hope this is helpful.