Towns > Glasgow > 1828-1912 - Post-Office annual Glasgow directory > 1855-1856

ALMANAC AND TIDE TABLE.
19
Tides take place about two days after full moon, and the Neap Tides about two days
after the first and last quarter.
In consequence of the sun being nearer the earth at the beginning of the year
than at any other time, his attraction will then be most powerful on the tides, and
should the moon happen to be in Perigee, their joint effects will produce the greatest
Spring Tides.
The mean duration of the ebb and flow is about 12 h. 25 m., that is, half the lunar
day of 24 h. 50 m., the period elapsing between successive returns of the moon to the
same point of the meridian. Thus the sea in every place undergoes a flux and reflux
as often as the moon passes the meridian, whether superior or inferior of the place ;
that is to say, twice in 24 ii. 50 m.
The following Tide Table is constructed on strict scientific principles, from the very
accurate Tide Tables of J. W. Lublock, Esq., London (the Tide Table in the Nautical
Almanac for 1855 is also calculated from the same Tables), and will be found to be
as correct as the position of our river, with regard to its locality, the influence of the
winds, and other diversified circumstances, either hasten or retard its natural current.
Hence the time of the Tide by observation may not at all times correspond precisely
with the time found in the Table.
These Tables are calculated for mean time, or the time shown by a well-regulated
clock, reckoning from noon of each day. The Moon's Phases are calculated to civil
time. The civil day begins at midnight.
TIDE TABLE OF SOME OF THE PRINCIPAL PORTS IN ENGLAND,
SCOTLAND, AND IRELAND.
The times of High Water at full and change of the moon, from which the follow-
ing equations are calculated, are reckoned from apparent noon. They represent the
actual times of High Water when the moon passes the meridian at the same time as
the sun, or the intervals between the times of transit of the moon and the times of
High Water on full and change days. With which, and the equation of time, the
times of High Water at all the Ports here given will be obtained by addition, as
here annexed.
Aberdeen, Scotland, -
Aberdovy, Wales,
Aberystwith, do.
Achil Head, Ireland,
Agnes, St., Scilly Isles,
Airpoint, Isle of Man,
Aldborough, England,
Alderney Pier, Eng. Channel,
Arran Isle, Scotland,
Arundel Bar, England,
Ayr, Scotland,
Ballyshannon, Ireland,
Balta, Shetland,
Baltimore, Ireland, -
Banff, Scotland,
Ban try Bay, Ireland,
Bardsey Island, Wales,
Barmouth, do.
Barnstaple Bar, England, -
Beachy Head, do.
Beaumaris, Wales, -
Belfast, Ireland,
Berwick, England, -
Blakeney Harbour, do.
Blythe, " do.
Bolt Head, do.
Boston, do.
Bridgewater, do.
Bridport, do.
H.M.
H.M.
Add 11-24
Brighton, England, -
Add 9-20
" 5-43
Burntisland, Scotland,
" 0-42
" 5-43
Campbelton, do. -
" 9-35
" 4-13
Cardigan Bar, Wales,
" 5-13
" 2-43
Carlisle, England, -
" 10-13
" 9-20
Carnarvon, Wales, -
" 7-33
" 8-58
Chatham, England, -
" 11- 7
" 4-59
Chester Bar, do.
" 8-43
" 9-26
Clear Cape, Ireland, -
" 2-13
" 9-28
Cork Harbour, do.
" 2-43
" 9-37
Cornwall Cape, England, -
" 2-43
" 3-43
Cowes, Isle of Wight,
" 8-58
" 7-58
Cromarty, Scotland, -
" 9-58
" 1-58
Dingle Bay, Ireland,
" 1-43
" 10-54
Donaghadee, do. -
" 7-28
" 1.59
Donegal Pier, do. -
" 9-23
" 6'15
Dublin Bar, do. -
" 9-25
" 6- 8
Dunbar, Scotland, -
" 0-37
" 3-43
Duncansbay Head, do.
" 6-28
" 10-
Dundee, do.
" 0-48
" 8-39
Dumbarton, do.
" 10-56
" 8-18
Dunoon, do.
" 10-15
" 0-31
Dungarvon, Ireland,
" 2-43
" 5- 3
Eddyston, English Channel,
" 3-28
" 0-58
Falmouth, England,
" 3-28
" 3-58
Foreland (North), do.
" 9-58
" 5-28
Foreland (South), do.
" 9-33
" 4-58
Galloway (Mull), Scotland,
" 9-28
" 4-18
Galway Bay, Ireland,
" 2-43