Season of the Year
Determine the season for a month and day in either hemisphere.
About Season of the Year
The day of year maps to a northern season, and choosing the southern hemisphere inverts it to the opposite season. Knowing the season matters for travel, planting and what to wear, and it differs entirely between hemispheres.
Formula
Season of the Year
Northern season from the day of year; the southern hemisphere is the opposite
- hemisphere
- Flips the season because of the Earth's tilt
Worked example
With the default values below, Season of the Year returns Season of Summer. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Monthaccepts 1–12
- 7
- Dayaccepts 1–31
- 20
- Hemisphereone of Northern, Southern
- Northern
Results
- Season
- Summer
- Day Number
- 202
- Season Number
- 3
Step by step
- 1Values used
- 2Season of the Year
- 3Season= Summer
- 4Day Number= 202
- 5Season Number= 3
Assumptions and limits
- The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to whole numbers, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Season of the Year calculated?
Northern season from the day of year; the southern hemisphere is the opposite The day of year maps to a northern season, and choosing the southern hemisphere inverts it to the opposite season.
Why does Season of the Year matter?
Knowing the season matters for travel, planting and what to wear, and it differs entirely between hemispheres.
What values do I need to enter?
This calculator takes 3 inputs: Month, Day, Hemisphere. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.