On and upon are interchangeable, however, in some instances each has gained preference.
For example
row upon row of seats;
once upon a time;
on no account;
on good authority;
Once Upon a Time - 2011 Second Star to the Right 2-21 is rated/received certificates of: Netherlands:9 USA:TV-PG
once upon a time
When you wish upon a star, it makes no difference who you are. Once upon a time, I read a bedtime story to my little nephew. The frog is poised upon a lilypad.
You'll know when its the right time..
It usually begins with "Once upon a time,".
Once upon a time, One Morning and more...
Because it wasn't the right thing to do
the usual opening line of fairy tales is the "once upon a time"
then they will learn how to use their left hand and after a long period of time forget how to use their right hand.
When does once upon a timesOnce Upon a Time Season 4 come on Netflix
This can be done right on the dashboard of the car. You can just use the settings and then change to the right time.
Once upon a time, there was a young princess.Once upon a time, there was a knight riding through the woods.Once upon a time, in a far away place, there was an enchanted kingdom.