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I see you found it, but for others that might not read this Topic - [see Topic #6210 - https://www.fishingreminder.com/fishing-talk/5-help/3583-barometric-pressure-and-fishing%3f ]

https://www.fishingreminder.com/best-fishing-times-explained

Bottom of every page called How It Works

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Do you have any suggestion on how to determine the rating from Maori Fishing Calendar? which has a specific rating for each day in a moon cycle. Any sources for Maori Fishing Calendar as well?

Do you have any suggestions?
Thank you very much for any suggestions (^v^)

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Is this what you are looking for ?

https://www.fishingreminder.com/articles/42-fishing-articles/121-catch-more-fish-with-the-maori-fishing-calendar

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Referring to following statement, I would like to know on why fish are most active and feed vigorously as the moon is directly overhead or underfoot. This period is higher barometric pressure, fish activity should be slower, as the fish find cover or swim into deeper water.

"When the moon is directly overhead or when the moon is underfoot fish and other animals are most active and feed vigorously."

Do you have any suggestions on whether above statement is correct or not?
Thank you very much for any suggestions (^v^)

Likes: 0 Login to reply 6 years ago

Those statements are from the Solunar Theory, originally developed by John Alden Knight.
He developed the theory based on observations and came up with the major and minor feeding times.

I'd suggest you have a read of his book 'Moon up, Moon down' https://amzn.to/2L0R9tN

There is no specific scientific formula to prove this theory right or wrong, as it's based on observations and statistics.
Same goes for the barometric pressure. Most fisherman seem to report better catches during a rising or steady barometer.
Hence it's believed fish will feed better during this condition. Some people believe fish can detect those pressure changes in their swim bladders and it triggers feeding, with a low barometer making them more lethargic.
Don't know if it's scientifically proven, but even I can detect low pressure systems and get more lethargic :)

Anyway, the solunar theory is all about increasing chances to catch something. It doesn't claim that fish will only bite during major and minor times or only on high pressure systems. It's just says your chances will increase and that feeding can be more vigorous during those times.

If you're looking for more 'proof' you'd have to analyse fishing logs worldwide or setup a large experiment and try to replicate John Alden Knights findings. I kinda doubt though that this is something that can ever be fully scientifically proven or disproven.
Look at homeopathy for example. It principles have never been fully empirically proven or disproven, yet it works for so many people worldwide.

Likes: 0 Login to reply 6 years ago

Hey fish7110, I see where you're coming from. You think that when the moon is up or down the atmospheric pressure increases.
But I think that's not true. The moon doesn't affect the pressure and barometer readings.
It will only affect large bodies of water. If there is any effect on atmospheric pressure it would be tiny.

The atmosphere is subject to the same tidal forces as the oceans, although to a much lesser extent. Gases are less responsive to tidal forces because they are so much less dense than water. These tides affect atmospheric pressure, a well-known factor in weather systems. However, the increase in atmospheric pressure which can be detected at the front edge of the tidal wave is so small it is thought to be overwhelmed by other factors.

(from sciencing.com) https://goo.gl/EkpgJ5

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Haha...I liked you first post before you edited...Laws of Physics :)

Maybe fish7110 has some material to support what is becoming an obviously loaded question ?

The theory in question, to my naive understanding, is based on the observations of possibly millions of people over 10's of thousands of years. It is not a science, it is however, a mass observation over a very long time by a large amount of people.

The old adage comes to mind "never ask a question unless you already know the answer"...So maybe fish7110 could enlighten us on the scientific bases on which he places his question ??

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yeah I know, took the law of physics back as I'm not a physicist (otherwise I'd end up having to prove the law) :-)

But if moon up or moon down would cause a noteworthy atmospheric pressure drop and a low pressure would mean fish bite less, fish 7110 would have discovered a bit of a contradiction there :-)

As far as I can tell though there is no atmospheric pressure drop caused by the moon.

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I am not into all that physical stuff either. I mean, I am not lazy, I take the dog for a walk each day. About 5 to 10km. Then we play ball and if some other dog wants to get involved all is good...:)

Don't let yourself down like that...You CAN prove it..It is only the Law of Physics !! :):)

This might be a long shot...fish7110 is a UNI student (or same) with an assignment of finding scientific proof of a generality. We poor suckers are the target ??

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I would like to know on what green area is refer to.

1) High Barometric Pressure?
2) High Tide?

Does anyone have any suggestions?
Thanks, to everyone very much for any suggestions (^v^)

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LOL, those are the best fishing times - major and minor ;-)
I thought you read the how it works article, haha.

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Please see following image, I just wonder on why best time for fishing is following Moon instead of Barometric Pressure or Tide.

Do you have any suggestions?
Thanks, to everyone very much for any suggestions (^v^)

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Please research following subject.

What colour is a carrot before it is pulled from the ground ? That is not a trick question and the answer is quite simple.

I will give you a hint by asking another question...

If you use a red lure 5 shades lighter than true maroon at 5 different locations in the world on any given date at the same time at depths of 5 meters, 10 meters and 15 meters. What will be the colour of the lure at each location and depth ?

To make it simple why don't you pick the locations. To make it accurate make the locations no less than 1000km from each other on the longitude plane and no less than 500km on the latitude.

Then do a comparison by performing the same calculations using a blue lure 5 shades darker than true cyan.

So that we all have the same data to work with, let's all use the same date and the same start location...a past date with recorded conditions...let's say 12pm 25 Dec 2017 Hong Kong.

Let me know when you have finished your calculations.

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The period for Barometric Pressure is very stable for peak and bottom everyday, but I would update the barometric pressure to night, that is the measured data, that should be the same period for peak and bottom. Before updating the barometric pressure for 2 Jun, 2018 tonight, could you please provide more hint on why best time for fishing is following Moon instead of Barometric Pressure or Tide?

Thanks, to everyone very much for any suggestions (^v^)

Likes: 0 Login to reply 6 years ago

that's an interesting experiment you thought of, itsaboat. Quite philosophical again. I would have never thought of that, LOL
Always wondered what those sneaky carrots might be doing underground. I always assumed they are rainbow colour before being pulled and then turn orange as soon as we see them. Will we ever know for sure?
And then bringing in those lures into the equation - that's a real brain teaser, haha

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haha :)

Yeah...it should keep fish7110 busy for about...oooh...3 years :)

But something tells me that fish7110 is just not able to do those calculations.

All the data is there. 12pm 25 Dec 2017 Hong Kong start point is a past date so all the needed parameters and data is on record.

Don't tell fish7110...But the carrot has no colour untill it is pulled from the ground :)

Colour is an optical allusion. It is like hot and cold or light and dark. There is no such thing as cold, it does not exist. Cold is just a lack of heat. Same with dark, it does not exist, dark is just a lack of light.

Same with colour...Colour is simply the reflection (and absorption or non-reflection) of light particles at varying frequencies ie. light waves. The lack of light equals the lack of colour.

Of course, due to the movement of the Earth, Sun and moon, the intensity of light will vary at any given point on any given day at any given time. Therefore, the colour of any given object will appear different depending on the time and location and local conditions.

If fish7110 is capable of answering my question, then his Uni Thesis will make for some very interesting reading...But I think he is not capable !!

Likes: 0 Login to reply 6 years ago

nah, I think he can do it. I think his questions are quite interesting and reasonable.
Keep them coming fish 7110 😊 I'm happy to discuss this with you.

I'd just be interested to know if you are a fisherman yourself or what else sparks your interest in this topic.

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Yes, his questions are interesting and of course, there is no such thing as an un-reasonable question.

It is more interesting, however, to note that he almost always qualifies his questions with a statement of what he thinks is fact. Which of course would moot any answer that does not agree with and support his perceived statement of fact.

Quite a conundrum...He is either very, very smart and his questions have some sort of scientific basis...or...he is the best troll that I have ever seen !!

So. one vote for cannot answer the simple question...and one vote for can :)

I think it might be time for fish7110 to start putting his typing where his words are 😊

Likes: 0 Login to reply 6 years ago

Hey fish7110,

you seem to put a lot of effort into your research. I'd really like to know what you're up to there? :-)

Well let me try to answer your questions.

The Solunar Theory has really nothing to do with barometric pressure changes.
And like I said before - I think the moon position has no noticeable effect on air pressure.
In the example you've given, those fluctuations in pressure are too small.
You'd have to look for bigger changes over days, like here:

you see that in this example on Tuesday the barometer is rising again and this could indicate better fishing.

Anyway, you're right that in saltwater fishing we have the tides to give us an idea when fish might be feeding.
Some fishing spots are even only accessible during low or high tide and of course current plays a big role as to where fish might be feeding. But then ask yourself - what is causing those tides? And what do you do further inland where you don't have tides?
This is what John Alden Knight did. He then realised that by following the source (the moon) instead of the tides his fishing was more successful and he could use his theory for fresh water fishing as well. In lakes and rivers there are no tides to follow. Yet the moon still has the same gravitational effect.

Btw - we do actually have tide times on the Solunar Clock for many places in the world - but unfortunately not for Hong Kong, so you can see only the minor and major times for your location.

So the answer as to why the best fishing times follow the moon is because that's how the Solunar Fishing Theory works :-)
If fishing times were based on barometric pressure or tides, then we're not talking about the Solunar Theory anymore.

Likes: 1 Login to reply 6 years ago

I have updated the barometric pressure, and the peak and bottom is very stable around 10 - 11 AM and PM for Peak, 5 AM and PM for bottom. I also find another video about tides. I would like to know more on what hidden factor John Alden Knight described under Solunar Fishing Theory by following the moon.

"Colour is an optical allusion. It is like hot and cold or light and dark. There is no such thing as cold, it does not exist. Cold is just a lack of heat. Same with dark, it does not exist, dark is just a lack of light.

Same with colour...Colour is simply the reflection (and absorption or non-reflection) of light particles at varying frequencies ie. light waves. The lack of light equals the lack of colour.

Of course, due to the movement of the Earth, Sun and moon, the intensity of light will vary at any given point on any given day at any given time. Therefore, the colour of any given object will appear different depending on the time and location and local conditions."

Q1
Referring to above statement, New moon is just a lack of light, so NO light particles at varying frequencies during new moon, what about Full Moon? how to describe the light particles at varying frequencies from Q1 - Full Moon - Q3?

Q2
Referring to above statement, I would like to know on how color and intensity of moon light is vary based on different moon phrase. If color and intensity of moon light effects fishes behavior, then we should not fishing at night during the new moon and not fishing in daytime during full moon, because moon is on the other side of Earth.

Q3
I find a good example as shown below, and would like to know why not able to go fishing at night during new and full moon. is it a bug?

Do you have any suggestions?
Thanks, to everyone very much for any suggestions (^v^)

Likes: 0 Login to reply 6 years ago

well - to find the hidden factor John Alden Knight described (if there is one), I think you'd really have to read his books :-)

The tide video is pretty cool, I like it.
This shows why it's so hard to predict tide times.

You can certainly fish on a new moon or full moon during the night :-)
The reason there is a missing major time on those days in your examples is because of the overlapping days.
Not every day sees a moonrise or moonset. There's also a minor/major time missing at those nights when the moon rises or sets on the next day. This is because of the the 24h clock display. You can't really display times for the next day on the same clock otherwise you'd need a 48h clock 😊 But essentially there would also be a good fishing time around midnight in your examples and not displaying them is a bit of a bug. I meant to fix that for ages but it hasn't bothered me enough to do it yet, LOL

As for the colour/light intensity of the moon. I'm really not sure about it.
I always kinda think in the back of my head that night fishing during full moon is better because fish can see what's going on.
So they feed during the night under a full moon and get more lazy during the day as they are still full from their nightly meals 😊 And vice versa day fishing during a new moon is better. But don't quote me on that, this is just an assumption. You should give it a try when you go fishing and see for yourself. Some field testing can never hurt.

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That is a good idea. Wish I had thought of that...

There you go fish7110, get a copy of all the books ever published by John Alden Knight. eBay might be a good place to start.

Then once you have read all the books and finished the lure colour calculations, let us know.....It shouldn't take no more than about 5 years...plus postage.

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WARNING

The above Youtube video posted by fish7110 is more than 15 minutes long.

For those on slow or costly internet, you are not missing much. It is just another one of those YT conspiracy gurus trying to explain why the world is wrong.

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did you watch the video itsaboat? It's long but it's actually quite good and informative. (don't click on play if you're still on dial up, LOL)
I don't think its any conspiracy theory. It's just a comprehensive view on how tides are generated. Nothing against conventional wisdom.
The whole PBS Space time youtube channel is actually really good with heaps of cool videos. I know what I'll be watching on this rainy Sunday 😊

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Rainy hay? Bit cloudy on this side of the ditch too and I am 400km inland :)

I watched the first 2 or 3 minutes. He lost me when he basically said they are right but he is going to explain why they are not correct !! Not worth 15 minutes of my data usage :)

Funny though. my reply to message wont stay under fish7110. I tried it twice.

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I just went out to check on the chicken and it was like going for a swim :-)
Yeah I have to check up on that reply message ordering as well.

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Gee...I almost fell off my perch when I read you had checked on the chicken :)

The owners here left yesterday. Would you believe their last remaining chicken was taken by a fox just before or just after they left.

Creepy :)

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maybe I should try fishing out on the lawn that's under water now, looks like a good day for it, LOL

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It seems that following the moon during fishing is good as long as you can see the moon on the sky. If moon is underfoot, it is better following barometric pressure or tides instead.

Does anyone have any suggestions?
Thanks, to everyone very much for any suggestions (^v^)

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hmm, I never heard of that theory, lol. But why not? Give it try and let us know how it works out for you.

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Did you finish reading the books already ??

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Have you read this books before? If yes, it is better to discuss his theory with fishing experience instead of reading alone.
Do you have any suggestions?
Thanks, to everyone very much for any suggestions (^v^)

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