Algol Minima – Derekscope

It’s a fantastic opportunity for naked-eye observation or astrophotography,
especially on the evening and overnight dates.
o
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? (map)
– Deaf astronomer John Goodricke (BSL Explanation)
o
Here’s a list of upcoming minimum brightness times for Algol (Beta Persei) that are well-placed for UK observers.

– 2026 Algol Minima
– 2027 Algol Minima
– 2028 Algol Minima
– 2029 Algol Minima
– 2030 Algol Minima

2026 Algol Minima

2026 Algol Minima

oooo

January	Time (GMT)
Wed 7th	05:13 am
Saturday 10th	02:02 am
Monday 12th	22:51 pm
Thursday 15th	19:40 pm
###	###
.
###	###
.

February	Time (GMT)
Monday 2nd	00:36 am
Wed 4th	21:26 pm
Saturday 7th	18:15 pm
Thursday 19th	05:33 am
Sunday 22nd	02:22 pm
.
#
.

March	Time (GMT)
Saturday 14th	04:07 am
Tuesday 17th	00:57 am
Thursday 19th	21:46 am
Sunday 22nd	18:35 pm
###	###
.	.
###	###
.

April	Time (BST)
Monday 6th	03:42 am
Thursday 9th	00:31 am
Saturday 11th	21:20 pm
.	.
.	.
.	.
###	###
.

May	Time (BST)
Friday 1st	23:04 am
.	.
.	.
.	.
.
.	.
.	.
.

June	Time (BST)
Thursday 11th	03:30 am
Monday 15th	23:49 pm
.	.
.	.
.	.
.	.
.	.
.

July	Time (BST)
Wed 1st	04:11 am
Friday 3rd	01:00 am
.	.
.	.
.	.
.	.
.	.
.

August	Time (BST)
Thursday 13th	04:21 am
Sunday 16th	01:10 am
.	.
.	.
.	.
.	.
.	.
.

September	Time (BST)
Saturday 5th	02:50 am
Monday 7th	23:39 pm
.	.
.	.
.	.
.	.
.	.
.

October	Time (BST)
Sunday 18th	03:00 pm
Tuesday 20th	23:49 pm
Friday 23rd	20:38 am
.	.
.	.
.	.
.	.
.

November	Time (GMT)
Saturday 7th	03:42 am
Tuesday 10th	00:31 am
Thursday 12th	21:20 pm
Sunday 15th	18:09 pm
.	.
.	.
.	.
..

December	Time (GMT)
Wed 2nd	23:03 pm
Saturday 5th	19:52 pm
Sunday 20th	03:58 am
Wed 23rd	00:47 am
.	.
.	.
.	.
.

2027 Algol Minima

2027 Algol Minima

oooo

January	Time (GMT)
Saturday 9th	05:43 am
Tuesday 12th	02:32 am
Thursday 14th	23:21 pm
Sunday 17th	20:11 pm
Wed 20th	17:01 pm
.
###	###
.

February	Time (GMT)
Monday 1st	04:17 am
Thursday 4th	01:07 am
Tuesday 9th	18:46 pm
Saturday 21st	06:03 am
Sunday 21st	23:35 pm
.
#
.

March	Time (GMT)
Monday 1st	20:31 pm
Thursday 4th	17:’20 pm
Tuesday 16th	04:38 am
Friday 19th	01:27 am
Sunday 21st	22:16 pm
.	.
###	###
.

April	Time (BST)
Thursday 8th	03:12 am
Sunday 11th	00:01 am
Tuesday 13th	20:50 pm
.	.
.	.
.	.
###	###
.

May	Time (BST)
Saturday 1st	02:45 am
Monday 3rd	23:34 pm
Friday 21st	04:29am
.	.
.
.	.
.	.
.

June	Time (BST)
Sunday 13th	03:00 am
Tuesday 15th	23:49 pm
.	.
.	.
.	.
.	.
.	.
.

July	Time (BST)
..	.
.	.
.	.
.	.
.	.
.	.
.	.
.

August	Time (BST)
Wed 18th	01:40 am
.	.
.	.
.	.
.	.
.	.
.	.
.

September	Time (BST)
Tuesday 7th	03:20 am
Friday 10th	00:09 pm
Sunday 12th	20:57 pm
.	.
.	.
.	.
.	.
.

October	Time (BST)
Saturday 2nd	22:38 pm
Tuesday 5th	19:27 pm
Monday 20th	03:30 am
Thursday 23rd	00:19 am
.	.
.	.
.	.
.

November	Time (GMT)
Tuesday 9th	04:12 am
Friday 12th	01:01 am
Sunday 14th	21:50 pm
Wed 17th	18:39 pm
Tuesday 24th	05:52 am
.	.
.	.
..

December	Time (GMT)
Thursday 2nd	02:44 am
Saturday 4th	23:34 pm
Tuesday 7th	20:23 pm
Friday 10th	17:12 pm
Wed 22nd	04:28 pm
.	.
.	.
.

2028 Algol Minima

2028 Algol Minima

oooo

January	Time (GMT)
Tuesday 11th	06:13 am
Friday 14th	03:02 am
Sunday 16th	23:52 pm
Wed 19th	20:41 pm
Saturday 22nd	17:30 pm
###	###
.
###	###
.

February	Time (GMT)
Thursday 3rd	04:48 am
Sunday 6th	01:37 am
Tuesday 8th	22:27 pm
Friday 11th	19:16 pm
.	.
.
#
.

March	Time (GMT)
Friday 3rd	21:01 pm
Sunday 5th	17:51 pm
Friday 17th	05:08 am
Monday 20th	01:57 am
Wed 22nd	22:47 pm
.	.
###	###
.

April	Time (BST)
Sunday 9th	04:42 am
Wed 12th	01:32 am
Friday 14th	22:21 pm
.	.
.	.
.	.
###	###
.

May	Time (BST)
Tuesday 2nd	03:16 am
Friday 5th	00:05 am
Sunday 7th	20:54 pm
Monday 22nd	03:59 am
.
.	.
.	.
.

June	Time (BST)
Wed 14th	03:30 am
Saturday 17th	00:19 am
.	.
.	.
.	.
.	.
.	.
.

July	Time (BST)
Friday 7th	02:00 am
Sunday 9th	22:49 pm
.	.
.	.
.	.
.	.
.	.
.

August	Time (BST)
Saturday 19th	02:10 am
.
.	.
.	.
.	.
.	.
.	.
.

September	Time (BST)
Friday 8th	03:50 am
Sunday 10th	00:38 am
Wed 13th.	21:27 pm
.	.
.	.
.	.
.	.
.

October	Time (BST)
Sunday 1st	02:19 am
Tuesday 3rd	23:08 pm
Friday 6th	19:57 pm
Saturday 21st	04:00 am
.	.
.	.
.	.
.

November	Time (GMT)
Saturday 11th	04:43 am
Monday 13th	01:31 am
Wed 15th	22:20 pm
Saturday 18th	19:09 pm
.	.
.	.
.	.
..

December	Time (GMT)
Sunday 3rd	03:15 am
Wed 6th	00:04 am
Friday 8th	20:53 pm
Monday 11th	17:42 pm
Saturday 23rd	04:59 am
.	.
.	.
.

2029 Algol Minima

2029 Algol Minima

oooo

January	Time (GMT)
Monday 15th	03:33 am
Thursday 18th	00:22 am
Saturday 20th	21:11 pm
Tuesday 23rd	18:01 pm
###	###
.
.

February	Time (GMT)
Sunday 4th	05:18 am
Wed 7th	02:08 am
Friday 9th	22:57 pm
Monday 12th	19:46 am
#	#
.
#
.

March	Time (GMT)
Friday 2nd	00:43 am
Sunday 4th	21:32 pm
Wed 7th	18:21 pm
Monday 19th	05:39 am
Thursday 22nd	02:28 am
.	.
###	###
.

April	Time (BST)
Saturday 14th	02:02 am
Monday 16th	22:51 pm
.	.
.	.
.	.
.	.
###	###
.

May	Time (BST)
Friday 4th	03:46 am
Monday 7th	00:35 am
Wed 9th.	21:24 pm
.	.
.
.	.
.	.
.

June	Time (BST)
Tuesday 19th	00:49 am
	.
.	.
.	.
.	.
.	.
.	.
.

July	Time (BST)
Monday 9th	02:30 am
Wed 11th	23:19 pm
.	.
.	.
.	.
.	.
.	.
.

August	Time (BST)
Tuesday 21st	02:39 am
.
.	.
.	.
.	.
.	.
.	.
.

September	Time (BST)
Monday 10th	04:20 am
Thursday 13th	01:08 am
Friday 21st	21:57 pm
.	.
.	.
.	.
.	.
.

October	Time (BST)
Wed 3rd	02:49 am
Friday 5th	23:38 pm
Monday 8th	20:27 pm
Tuesday 23rd	03:30 am pm
.	.
.	.
.	.
.

November	Time (GMT)
Monday 12th	05:13 am
Thursday 15th	02:02 am
Thursday 12th	22:51 pm
Tuesday 20th	19:40 pm
.	.
.	.
.	.
..

December	Time (GMT)
Wed 5th	03:45 am
Saturday 8th	00:34 am
Monday 10th	21:23 pm
Thursday 13th	18:12 pm
.	.
.	.
.	.
.

2030 Algol Minima

2030 Algol Minima

oooo

January	Time (GMT)
Wed 2nd	19:57 pm
Thursday 17th	04:03 am
Sunday 20th	00:52 am
Tuesday 22nd	21:42 pm
###	###
.
###	###
.

February	Time (GMT)
Sunday 6th	05:49 am
Saturday 9th	02:38 am
Monday 11th	23:27 pm
Thursday 14th	20:17 am
#	#
.

.

March	Time (GMT)
Friday 1st	04:24 am
Monday 4th	01:13 am
Thursday 7th	22:02 pm
Saturday 9th	18:52 pm
##	##
.	.
###	###
.

April	Time (BST)
Tuesday 16th	03:32 am
Friday 19th	00:21 am
.	.
.	.
.	.
.	.
###	###
.

May	Time (BST)
Thursday 9th	01:05 am
Saturday 11th	21:54 pm
.	.
.	.
.
.	.
.	.
.

June	Time (BST)
Friday 21st	01:19 am
	.
.	.
.	.
.	.
.	.
.	.
.

July	Time (BST)
Thursday 11th	03:00 am
Saturday 13th	23:48 pm
.	.
.	.
.	.
.	.
.	.
.

August	Time (BST)
Saturday 3rd	01:29 am
Monday 5th	22:18 pm
Friday 23rd	03:09 pm
.	.
.	.
.	.
.	.
.

September	Time (BST)
Thursday 12th	04:40 am
Sunday 15th	01:38 am
Tuesday 17th	22:57 pm
.	.
.	.
.	.
.	.
.

October	Time (BST)
Saturday 5th	03:19 am
Monday 7th	00:08 pm
Thursday 10th	20:57 pm
.	. pm
.	.
.	.
.	.
.

November	Time (GMT)
Saturday 2nd	18:27 pm
Thursday 14th	05:43 am
Sunday 17th	02:32 am
Tuesday 19th	23:21 pm
Friday 22nd	20:10 pm
.	.
.	.
..

December	Time (GMT)
Saturday 7th	04:15 am
Tuesday 10th	01:04 am
Thursday12th	21:53 pm
Sunday 15th	18:42 am
.	.
.	.
.	.
.

oooo

GMT = Greenwich Mean Time
Mean Solar time at the Royal Observatory in Greenwich,
located at 0° longitude, Greenwich, London, United Kingdom.)
oooo
BST = British Summer Time
BST is the daylight saving time used in the UK,
where clocks are set one hour ahead of Greenwich Mean Time (GMT)
from the last Sunday in March to the last Sunday in October.
oooo

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