Overview
If you want to learn how to time travel 20 years in 5 minutes, follow this guide
Follow these steps
1: Shut down ADVenture Capitalist.
2: Shut down Steam.
3: Change the date and time on your computer.
4: SHUT DOWN YOU WIFi
5: Open Steam
6: Open ADVenture Capitalist
7: Wait about 25 seconds (Amount of money you earned should pop up)
8: Purchase an item
9: Exit ADVenture Capitalist
10: Exit Steam
11: Change back time
12: Shut down computer
13: Open up computer
14: Open Steam
15: Open ADVenture Capitalist
Done
You should have your money
EDIT: I have decided to make this guide shorter
1: Steam open but not ADVenture
2: Change date and time and shut down your wifi
3: Open ADVenture
Done
Restart your computer and bring it back to normal time