I've had trouble finding a nice tide table for the east coast, so I checked out my 1886 Bowditch.
Sure enough, it had the following (plus tables for the rest of the world):

http://www.sv-loki.com/NETides.jpg
http://www.sv-loki.com/SETides.jpg

I'm sure some oceanographer can explain the variations, but there's nothing obvious that would help
me if I landed on a different planet.

--
-jeff

"N1EE" wrote in message
om...
1 pt to you Wally.

High Tide will be somewhat close to the
mid point between moonrise and moonset.

I have not researched many lcoations but I'd
estimate +/- an hour for more locations.

In my location High tide occurs about an hour
before that mid point.

Geographical factors will have a big influence.
A body of water might be north-south like the
Bay of Fundy or Gulf or California versus
east-west like Long Island Sound.

I find it handy to be able to judge high tide
by looking at the moon. I can add or subtract
to estimate when the next high or low tide will
be.

As you can see we have at times nearly a 9
foot swing, so tidal currents coupled with river
current can cause problems with launching if you
are like me, and using a chain hoist. At times
I cannot drop the boat all the way into the river.
I need longer lift straps.

Here is an example for my location:

2004-05-02 5:26 PM EDT Moonrise
2004-05-02 7:51 PM EDT Sunset

2004-05-02 10:09 PM EDT 7.80 feet High Tide

2004-05-03 4:33 AM EDT -0.49 feet Low Tide
2004-05-03 5:06 AM EDT Moonset
2004-05-03 5:47 AM EDT Sunrise

2004-05-03 10:38 AM EDT 7.16 feet High Tide

2004-05-03 4:45 PM EDT -0.14 feet Low Tide
2004-05-03 6:42 PM EDT Moonrise
2004-05-03 7:52 PM EDT Sunset

2004-05-03 10:55 PM EDT 8.06 feet High Tide

2004-05-04 5:21 AM EDT -0.84 feet Low Tide
2004-05-04 5:33 AM EDT Moonset
2004-05-04 5:46 AM EDT Sunrise

2004-05-04 11:27 AM EDT 7.20 feet High Tide

2004-05-04 4:35 PM EDT Full Moon
2004-05-04 5:31 PM EDT -0.26 feet Low Tide
2004-05-04 7:53 PM EDT Sunset
2004-05-04 8:01 PM EDT Moonrise

2004-05-04 11:42 PM EDT 8.21 feet High Tide

2004-05-05 5:44 AM EDT Sunrise
2004-05-05 6:06 AM EDT Moonset

You will note that the time of high tide slips
about 50 minutes every day and the interval
between high tides is about 12.5 hours.

A good sailor will know what these factors are
for his or her location to figure the next
high tide.

Bart Senior

"Wally" wrote

Bart Senior wrote:
Moonrise 4 pm local time
Moonset 4 am local time

Approximately when is high tide? [ 1 pt ]

I guess it depends on the location. For my area, it's a couple of hours or
so after lunar noon, so about midnight to 1am for the above example.