Capricorn Season End Date and Astronomical Definition
Capricorn season ends when the Sun moves into Aquarius, which typically occurs around January 19 or 20 each year. The exact moment is defined by the Sun's ecliptic longitude reaching 300 degrees, as calculated by the International Astronomical Union. This transition is based on the tropical zodiac, which aligns with the March equinox and is used by most Western astrology systems Capricorn dates and Sun transition times.
The seasonal boundary is fixed by the Earth's axial tilt and orbit, not by lunar or cultural calendars. The U.S. Naval Observatory maintains precise astronomical data for equinoxes and solstices, which determine the exact Sun-sign changeover moment USNO astronomical applications and data.
Financial Market Activity Around the Last Day of Capricorn Season
Equity markets often show seasonal patterns in late January, with the final trading days of Capricorn season coinciding with year-end portfolio rebalancing and early Q1 positioning. The S&P 500 has historically recorded positive January returns in a majority of years since 1950, a phenomenon sometimes tied to the "January effect" Forbes analysis of the January effect.
Fixed-income markets react to Federal Reserve policy signals released around this period, especially when January FOMC meeting minutes or updated dot plots are published. Bond yields and mortgage rates frequently shift as investors reprice rate expectations ahead of the first earnings reports of the new fiscal quarter Federal Reserve FOMC policy calendar.
Corporate and Regulatory Milestones Tied to the End of Capricorn
Key Earnings and Filing Deadlines
Public companies begin filing quarterly earnings reports and 10-K annual updates shortly after Capricorn season ends, with the SEC's EDGAR system showing a spike in submissions in late January and early February. The deadline for large accelerated filers to submit their annual reports is typically 60 days after the fiscal year end, which for many corporations aligns with this seasonal transition SEC EDGAR filing system.
Sector-Specific Trends
Technology and energy sectors often release forward guidance during this window, influencing capital allocation decisions and investor sentiment. Tesla and SpaceX, both founded by Elon Musk, have historically announced production targets and launch schedules in January, with data reported through SEC filings and public statements Tesla investor relations and SEC filings.
Regulatory and Macro Indicators
The Bureau of Labor Statistics releases the Employment Situation Summary in early February, providing the first major labor market data point of the new quarter. Consumer Price Index and Producer Price Index reports from the same period help frame inflation expectations for the remainder of the fiscal year BLS Employment Situation data archive.
Summary of Key Dates and Data Points
The last day of Capricorn season serves as a marker for the shift from year-end financial cleanup to early-year strategic planning. Investors, corporate finance teams, and regulators align their calendars around this transition, using it as a reference point for earnings, filings, and policy releases.