Mark your calendars: The September Equinox arrives on Monday, September 22, 2025 at 18:19 UTC (2:19 pm EDT | 11:19 am PDT).

The post Happy September Equinox 2025! appeared first on The Sun Today with Dr. C. Alex Young.

[Alex on EARTHSKY.ORG] This pattern in nature – auroras increasing twice a year – is one of the earliest patterns ever to be observed and recorded by scientists.

The post Aurora Season: Why More Auroras at Equinoxes? appeared first on The Sun Today with Dr. C. Alex Young.

On July 3, 2024 @ 19:54 UTC, 3:54 pm EST • 12:54 pm PST. At that time the distance from Earth's center to the Sun's center will be 94,502,939 miles (152,088,848 km).

The post So Far Away: Aphelion 2025 appeared first on The Sun Today with Dr. C. Alex Young.

The June Solstice is coming! Friday, June 20, 2025 at 10:42 pm EDT • 9:42 pm CDT • 8:42 pm MDT • 7:42 pm PDT • Saturday, June 21, 2025 at 02:42 UTC

The post Happy June 2025 Solstice appeared first on The Sun Today with Dr. C. Alex Young.

Occurs on Thursday, March 20, 2025, at 9:01 UTC • 5:01 a.m. EDT • 2:01 a.m. PDT

The post March 2025 Equinox: Northern Blooms, Southern Leaves appeared first on The Sun Today with Dr. C. Alex Young.

On January 4, 2025, at 13:28 UTC (8:28 a.m. EST or 5:28 a.m. PST), Earth's orbit will be at our closest point to the Sun for the year.

The post Happy Perihelion 2025: So Close appeared first on The Sun Today with Dr. C. Alex Young.

The start of winter (northern hemisphere) and summer (southern hemisphere) occurs on Saturday, December 21, 2024, at 09:21 UTC (4:21 a.m. EST).

The post December Solstice 2024 appeared first on The Sun Today with Dr. C. Alex Young.

The Equinox occurs on Sunday, September 22, 2024, at 12:43 UTC • 8:43 a.m. EDT • 5:43 a.m. PDT.

The post Happy September Equinox 2024 appeared first on The Sun Today with Dr. C. Alex Young.

On July 5, 2024 @ 05:06 UTC, 1:06 am EST (July 4, 2024 @ 10:06 pm PST) the distance from Earth's center to the Sun's center will be 94,510,539 miles (152,099,969 km).

The post So Far Away: Aphelion 2024 appeared first on The Sun Today with Dr. C. Alex Young.

The June Solstice is coming! Thursday, June 20, 2024 at 20:50 UTC • 4:50 pm EDT • 3:50 pm CDT • 2:50 pm MDT • 1:50 pm PDT

The post Happy June 2024 Solstice appeared first on The Sun Today with Dr. C. Alex Young.