The ATONIN Time Pyramid
The ATONIN Time Pyramid can help people remember which preposition – at, on or in – to use with hours, days, months, years, etc.
An easy way to remember which preposition to use with hours, days, weeks, months, years, decades, ages.
Do you have a difficult time remembering which preposition to use with hours, days, months, years, etc?
Imagine a pyramid divided horizontally into 3 groups.

At the top of the pyramid you have “AT” and this is used for the smallest in time: hours
- I’ll meet you AT 7 p.m.
In the middle of the pyramid you have “ON” and this is used for bigger time: days
- See you ON Saturday.
At the bottom you have “IN” and this is used for everything else that is bigger than hours or days
- I was born IN 1964.
- He takes holidays IN January.
- They played great music IN the 80′s.

