Starwatch: Autumnal equinox in northern hemisphere, spring in the south — SkimNews
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- The autumnal equinox occurs at 1:05am on Wednesday (UK time), according to the source
- The event marks the astronomical beginning of autumn in the northern hemisphere
- Simultaneously, it signals the start of spring in the southern hemisphere
- Day and night will not actually be equal until Friday, the source notes — not at the equinox moment itself
Why it matters: For skywatchers and calendar followers across hemispheres, the equinox fixes the seasonal pivot at a precise clock time, but the source flags that true equal-length day and night lags by Friday. Anyone planning equinox sunrise/sunset observations in the UK should account for that two-day gap between the astronomical event and the actual light balance.
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