Enter the total time (hrs) and the no light time (hrs) into the Calculator. The calculator will evaluate the Light Time.

## Light Time Formula

LT = TT - NT

Variables:

- LT is the Light Time (hrs)
- TT is the total time (hrs)
- NT is the no light time (hrs)

To calculate Light Time, subtract the no light time from the total time.

## How to Calculate Light Time?

The following steps outline how to calculate Light Time.

- First, determine the total time (hrs).
- Next, determine the no light time (hrs).
- Next, gather the formula from above = LT = TT – NT.
- Finally, calculate the Light Time.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

total time (hrs) = 24

no light time (hrs) = 12