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Minimum brightness times for Algol Minima
- Here’s a list of upcoming minimum brightness times for Algol (Beta Persei) that are well-placed for UK observers in November 2025.
o - It’s a fantastic opportunity for naked-eye observation or astrophotography, especially on the evening and overnight dates.
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| UK November 2025 | Time (GMT) |
| Wednesday 5th | 00:35 / 12.35am |
| Friday 7th | 21:24 / 9.24pm |
| Monday 10th | 18:13 /6.13pm |
| Saturday 22nd | 05:29 / 5.29am |
| Tuesday 25th | 02:18 / 2.18am |
| Thursday 27th | 23:07 / 11.07pm |
| Sunday 30th | 19:55 / 7.55pm |
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- The bright variable Star Beta Persei (Algol) reaches minimum brightness.
o - This variable star in Perseus varies from its brightest at magnitude +2.1, dropping to +3.4.
o - Even when dimmed, Algol is still visible to the naked eye.
o - Read more – Algol
– How to find Algol in Perseus?
– Deaf astronomer John Goodricke
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