Converting from Tropical Year (TY) to Leap Year (LY) in Time

What is Tropical Year (TY)

A Tropical Year (TY) is the time it takes for the Earth to complete one orbit around the Sun, approximately 365.2422 days.

What is Leap Year (LY)

A Leap Year (LY) is a year that has an extra day added to keep the calendar year synchronized with the astronomical year. Leap years occur every four years.

Conversion Formulas

To convert from Tropical Year (TY) to Leap Year (LY):

LY=TY×0.9979295

To convert from Leap Year (LY) to Tropical Year (TY):

TY=LY×1.002075

Examples

• Converting 4 TY to LY:

LY=4×0.9979295=3.991718

• Converting 3 LY to TY:

TY=3×1.002075=3.006224

• Converting 13 TY to LY:

LY=13×0.9979295=12.97308

Use this page to perform converting from Tropical Year (TY) to Leap Year (LY).