`usno_seasons`

Pack: usno-astronomy · Connect: https://pipeworx.io/mcp (see Connect below for a single-pack URL)

No MCP client? Call it directly: GET https://gateway.pipeworx.io/v1/tools/usno_seasons for the schema, then POST the same URL with its arguments for the data.

The seasons for a year from the US Naval Observatory: the UT date and time of the March and September equinoxes, the June and December solstices, and Earth’s perihelion and aphelion. Answers “when is the summer solstice”, “what date is the autumn equinox in 2027”, “first day of spring”, “when is Earth closest to the Sun”. Northern-hemisphere season names are attached; the southern hemisphere is the opposite.

Parameters

Name	Type	Required	Description
`year`	number	yes	Four-digit year, 1800-2050. Default: current year.

Example call

Arguments

{
  "year": 2026
}

curl

curl -X POST https://gateway.pipeworx.io/usno-astronomy/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"usno_seasons","arguments":{"year":2026}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('usno_seasons', {
  "year": 2026
});

Connect

Add this to your MCP client config — every tool in the catalog, including this one — or use one-click install buttons:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://pipeworx.io/mcp"
    }
  }
}

Connect to just the usno-astronomy pack

{
  "mcpServers": {
    "usno-astronomy": {
      "url": "https://gateway.pipeworx.io/usno-astronomy/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

usno_seasons