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@Devorppa@aus.social

2025-12-11 22:07 UTC

@troberts@theblower.au @juliew2010@aus.social The summer solstice this year is at 2:03 AM on 22 December and that will be ‘the longest day of the year’ as measured by the total daylight. Thereafter, total daylight each day starts getting shorter (admittedly by only a second on 23 December but it then steadily picks up the pace each day). However, it is not as simple as the sun immediately rising later and setting earlier from the solstice onwards: · the earliest sunrise occurs at 5:41 AM on the morning of 6 and 7 December and then slowly begins to rise later: · from 7 December until the solstice, the loss of daylight in the morning is less than the extra daylight from later sunsets in the evening. · the latest sunset actually occurs on 6 January 2026 at 8:21 PM: · from the solstice onwards, the loss of sunlight in the morning (from later sunrises) is greater than any extra sunlight in the evening (from later sunsets), so the daylight gets shorter. So in summary, we basically start losing morning sunlight after 7 December and then start losing afternoon sunlight after 6 January 2026. But overall, the total daylight starts shrinking after 22 December. I hope this helps. I had assumed that it all changed from the solstice, but when I looked into it about a decade ago, I was surprised by the above.

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