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Tide Gauge Details - Solomon Islands - Honiara

Device description

Name
Solomon Islands - Honiara
Country
Solomon Islands
Group
TD UNESCO
Lat/Lon
-9.4289 / 159.955505

Last measured values

Time(UTC)
11 Jan 2026 17:59:00
Latency
5376
Level
0.78

Harmonics

Points count
6477137
First date
11 Mar 2011 05:00
Last date
11 Jan 2026 17:59

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 8.48423E-1 0E+0
1 0.12877 -3.13568E-5 -1.11102E-4
2 0.12886 -2.29422E-4 -2.41101E-4
3 0.12938 3.17449E-5 -2.80695E-4
4 0.14707 -1.99444E-4 1.1529E-4
5 0.16841 3.72331E-4 -1.66422E-4
6 0.16857 -6.91328E-4 -4.24719E-4
7 0.17036 5.66723E-4 -3.5629E-4
8 0.17052 -1.49999E-3 -3.35494E-4
9 0.17251 -7.68823E-5 7.95101E-4
10 0.17470 -2.85026E-4 -1.47319E-4
11 0.19989 1.05557E-3 3.87854E-4
12 0.20545 8.22095E-4 -3.4544E-4
13 0.24966 -6.04189E-4 8.12822E-4
14 0.25000 -5.07227E-4 -2.18163E-4
15 0.25395 5.92327E-4 1.9939E-3
16 0.25431 8.14124E-5 -1.55426E-3
17 0.25631 8.75812E-5 -3.69457E-4
18 0.25667 -6.89407E-4 -2.01269E-4
19 0.25876 -3.60927E-3 2.30389E-4
20 0.26122 9.47416E-4 1.40319E-3
21 0.33303 -1.05E-3 -2.4268E-3
22 0.34071 -2.3493E-3 4.59776E-4
23 0.34135 -8.04157E-4 6.15305E-4
24 0.34502 -2.93757E-3 -4.64488E-3
25 0.34943 4.29585E-4 -3.53319E-4
26 0.48977 -3.38708E-4 1.06059E-3
27 0.49109 6.42301E-4 1.89822E-3
28 0.49863 1.96427E-2 9.77179E-4
29 0.49932 1.35039E-4 -2.04157E-3
30 0.50000 -6.72968E-2 -2.80309E-2
31 0.50798 5.5058E-3 -2.47552E-4
32 0.50924 -1.8728E-3 -3.3405E-3
33 0.51606 1.52598E-3 2.17092E-3
34 0.51679 -1.78028E-3 -8.41927E-5
35 0.51753 -1.85552E-2 4.70483E-2
36 0.51826 3.11312E-4 6.4312E-4
37 0.52608 -1.8541E-3 -1.73984E-3
38 0.52743 -6.62151E-3 9.99795E-3
39 0.53632 -3.7645E-3 -3.00587E-4
40 0.53772 2.18856E-3 1.70529E-4
41 0.54697 -4.84611E-4 1.8244E-3
42 0.54843 2.32293E-4 3.95262E-4
43 0.89909 -1.22571E-4 2.84101E-4
44 0.92942 6.18419E-3 -6.48438E-3
45 0.93417 -7.16225E-4 1.37025E-3
46 0.96244 -9.12519E-3 7.31148E-3
47 0.96696 1.05835E-3 1.72896E-3
48 0.99185 1.02024E-3 -2.60192E-3
49 0.99455 -3.24612E-3 2.22837E-3
50 0.99727 1.61924E-1 1.43656E-1
51 1.00000 6.21098E-4 8.21985E-3
52 1.00275 4.62876E-2 5.79379E-2
53 1.00551 5.01194E-3 7.4523E-3
54 1.02954 1.45426E-3 4.62345E-4
55 1.03472 7.5054E-3 -5.82498E-3
56 1.04061 -1.67619E-3 -9.48595E-4
57 1.06951 3.68654E-3 -1.04328E-3
58 1.07581 8.85117E-2 -4.73133E-2
59 1.11346 2.63987E-3 -1.44584E-3
60 1.11951 -1.09128E-2 -1.52138E-2
61 1.16035 -9.30788E-6 -1.09201E-3
62 1.16693 -1.16748E-3 1.84938E-3
63 1.21136 2.18371E-4 2.49983E-4
64 13.66079 -3.63169E-3 -5.93851E-3
65 14.76529 -6.78259E-3 -2.2952E-3
66 27.55455 4.07858E-3 1.70029E-2
67 31.81193 1.18676E-4 -8.61981E-4
68 182.62118 -6.67244E-2 -1.06181E-2
69 365.25998 1.07292E-1 -1.63761E-2
Mathematical Formula
Tide calculation mathematical formula
Visual Basic Syntax
Function EstimateTideValues() As [Function]
                        Dim Pi As [Double] = Math.PI
                        Dim sum As [Double] = harmonics(0, 1)
                        For k As Int16 = 1 To harmonics.GetUpperBound(0)
                        Dim period As [Double] = 2 * Pi / harmonics(k, 0)
                        Dim coefCos As [Double] = harmonics(k, 1)
                        Dim coefSin As [Double] = harmonics(k, 2) 
                        sum = sum + coefCos * Math.Cos(time * period)
                        sum = sum + coefSin * Math.Sin(time * period)
                        Next
                        Return sum
                        End Function
C# Syntax
double EstimateTideValues()
                        {
                        double Pi = Math.PI;
                        double sum = harmonics[0, 1];
                        for (int k=1; k <= harmonics.GetUpperBound(0); k++)
                        {
                        double period = 2 * Pi / harmonics[k, 0];
                        double coefCos = harmonics[k, 1];
                        double coefSin = harmonics[k, 2];
                        sum += coefCos * Math.Cos(time * period);
                        sum += coefSin * Math.Sin(time * period);
                        }
                        return sum;
                        }

Axis ranges

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