The coexistence of these two calendars often leads to disagreements about the "true" start of a season. However, both are valid and verified by global scientific bodies like NOAA and the World Meteorological Organization. The Meteorological Purpose: Data Consistency
| Season | Meteorological Months | Astronomical Range (Approx.) | Key Characteristics | | :--- | :--- | :--- | :--- | | | March, April, May | Mar 20 – Jun 20 | Warming, blossoms, rain showers | | Summer | June, July, August | Jun 21 – Sep 22 | Hottest, long days, thunderstorms | | Autumn (Fall) | September, October, November | Sep 23 – Dec 21 | Cooling, leaves change, harvest | | Winter | December, January, February | Dec 21 – Mar 19 | Coldest, short days, snow/ice |
October to November. A transitional period featuring the retreat of the monsoon. Traditional Indian Seasons (Shada Ritu) months for the seasons verified
Assuming the most common business logic case— (e.g., for employment, tenant history, or business licenses)—here is a comprehensive feature specification.
The astronomical calendar defines seasons based on the Earth's position relative to the Sun. Because the Earth's axis is tilted at 23.5 degrees, different hemispheres receive varying amounts of sunlight throughout the year. This system relies on equinoxes (when day and night are roughly equal) and solstices (the longest and shortest days of the year). The coexistence of these two calendars often leads
❌ Thinking seasons start on the 1st of a month astronomically – they start on equinoxes/solstices. ❌ Applying Northern Hemisphere months to the Southern Hemisphere without flipping the season. ❌ Assuming meteorological seasons are universal – they are fixed by calendar, but hemisphere flips.
The (around June 21 in the North, December 21 in the South) brings the longest day of the year. A transitional period featuring the retreat of the monsoon
The months for each season are generally agreed upon by meteorologists and astronomers. Here's a breakdown of the verified months for each season in the Northern Hemisphere: