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Calculator Answers

How Many Days Until Spring?

Blake Boege
Written by Blake Boege · Founder, Calculator Answers

An astronomical countdown tool that calculates the duration until the next Spring Equinox (first day of Spring) and displays a live ticking countdown in days, hours, minutes, and seconds.

View the live countdown to the first day of Spring. Find out exactly how many days, weeks, hours, and seconds are left until March 20.

See also: How Many Days Until Summer, How Many Days Until Fall?, and Days Until Date Countdown.

Quick Answer

Find the exact count of days remaining until the next Spring Equinox (March 20) computed live.

Loading live countdown...

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Examples

Spring Equinox Date

March 20 (Approx.)

Equinox Event

Astronomical Event

How it works

The live timer computes the differences between now and March 20 in local timezone milliseconds:

Countdown · Days = (March 20 - Today) / 86,400,000

How the Days Until Spring are Calculated

To calculate the number of days until the start of spring, find the difference in milliseconds between the equinox target date (March 20 at midnight) and the current local system date. Since the spring equinox occurs annually, if March 20 of the current year has already passed, the calculation shifts to next year's March 20 date.

Target Date: March 20
Math: (Target Date Time − Current Time) in Milliseconds ÷ 1,000 ÷ 60 ÷ 60 ÷ 24 = Days Remaining

Astronomical vs. Meteorological Seasons

Seasons can be divided in two ways:

  • Astronomical Spring: Starts on the spring equinox (March 19–21) and ends on the summer solstice (June 20–22). This is governed by the Earth's tilt relative to the sun.
  • Meteorological Spring: Defined by climatologists as the three transition months: March, April, and May. It begins on March 1 and ends on May 31.

Related Date & Holiday Countdowns

Explore our other dynamic date and seasonal countdown tools:

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More tools from Conversions

How Many Days Until SummerSee how many days, hours, and minutes are left until the first day of Summer (June 21) with our live countdown timer.How Many Days Until Fall?Calculate exactly how many days, hours, and minutes are left until the first day of Fall / Autumn (September 22).Days Until Date CountdownCalculate exactly how many days, weeks, hours, and seconds are left until any custom date, birthday, or anniversary.

Frequently asked questions

In the Northern Hemisphere, spring starts on the spring equinox (also called the vernal equinox), which typically falls on March 19, March 20, or March 21. For calendar tracking, March 20 is widely used as the general start date.

The vernal equinox is the moment when the sun crosses the celestial equator from south to north. This results in nearly equal amounts of day and night hours across the globe.

Divide the remaining days by 7 to determine the number of weeks. For example, if there are 70 days left, it is exactly 10 weeks until March 20.

In the Southern Hemisphere, the seasons are reversed. Spring starts on the September equinox (approx. September 22), while March 20 marks the beginning of autumn.