Days Between First Day of Summer (Summer Solstice) and First Day of Fall (Autumn Equinox)
In 2026, First Day of Summer (Summer Solstice) is on Sunday, 2026-06-21 and First Day of Fall (Autumn Equinox) is on Tuesday, 2026-09-22.
2026 Duration Breakdown & Details
| Measurement | Value (2026) |
|---|---|
| Starting Holiday (First Day of Summer (Summer Solstice)) | Sunday, 2026-06-21 |
| Ending Holiday (First Day of Fall (Autumn Equinox)) | Tuesday, 2026-09-22 |
| Total Elapsed Days | 93 calendar days |
| Working Business Days | 66 days (Mon–Fri) |
| Weekend Days | 27 days (Sat–Sun) |
| Total Approximate Hours | 2,232 hours |
| Share of a Standard Year | 25.5% of 365 days |
5-Year Schedule Comparison (2024–2028)
See how the day count between First Day of Summer (Summer Solstice) and First Day of Fall (Autumn Equinox) shifts from year to year due to calendar shifts and leap days:
| Year | First Day of Summer (Summer Solstice) | First Day of Fall (Autumn Equinox) | Total Days | Business Days |
|---|---|---|---|---|
| 2024 | 2024-06-20 (Thu) | 2024-09-22 (Sun) | 94 days | 67 days |
| 2025 | 2025-06-21 (Sat) | 2025-09-22 (Mon) | 93 days | 65 days |
| 2026 2026 | 2026-06-21 (Sun) | 2026-09-22 (Tue) | 93 days | 66 days |
| 2027 | 2027-06-21 (Mon) | 2027-09-23 (Thu) | 94 days | 68 days |
| 2028 | 2028-06-20 (Tue) | 2028-09-22 (Fri) | 94 days | 68 days |
Why Track the Days Between First Day of Summer (Summer Solstice) and First Day of Fall (Autumn Equinox)?
Measuring from the summer solstice (June 20/21) to the autumnal equinox (September 22/23) calculates the exact astronomical length of Summer in the Northern Hemisphere (approx. 93.65 days).
First Day of Summer (Summer Solstice)
SeasonalThe Summer Solstice is the astronomical start of summer in the Northern Hemisphere and the longest day (with the most daylight hours) of the entire calendar year. It occurs when Earth's geographic pole reaches its maximum tilt toward the sun (approximately 23.4 degrees).
First Day of Fall (Autumn Equinox)
SeasonalThe Autumnal Equinox marks the official astronomical beginning of fall in the Northern Hemisphere. On this day, the sun crosses the celestial equator going south, producing nearly equal amounts of day and night across the globe.
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Frequently Asked Questions
How many days are between First Day of Summer (Summer Solstice) and First Day of Fall (Autumn Equinox) in 2026? ▼
In 2026, there are exactly 93 calendar days (13 weeks and 2 days) between First Day of Summer (Summer Solstice) (Sunday, 2026-06-21) and First Day of Fall (Autumn Equinox) (Tuesday, 2026-09-22).
How many working business days are between First Day of Summer (Summer Solstice) and First Day of Fall (Autumn Equinox)? ▼
In 2026, there are 66 working business days (Monday through Friday) and 27 weekend days between First Day of Summer (Summer Solstice) and First Day of Fall (Autumn Equinox).
Why does the number of days between First Day of Summer (Summer Solstice) and First Day of Fall (Autumn Equinox) vary? ▼
Holidays defined by floating weekday rules (such as 'the fourth Thursday of November' for Thanksgiving or lunar calculations for Easter) change calendar dates every year. As a result, the interval between First Day of Summer (Summer Solstice) and First Day of Fall (Autumn Equinox) shifts by several days across calendar cycles.
How can I calculate days between custom dates? ▼
You can use our free online Date Calculator at countdaysbetween.com to compute exact calendar days, working days, and time breakdowns between any two custom calendar dates.