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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)
22 Oct 2026 16:59:00
Latency
5502
Level
0.48

Harmonics

Points count
6855594
First date
11 Mar 2011 05:00
Last date
22 Oct 2026 16:59

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 8.42766E-1 0E+0
1 0.12877 -2.28436E-5 -1.0334E-4
2 0.12886 -2.12812E-4 -2.18956E-4
3 0.12938 2.89844E-5 -2.60144E-4
4 0.14707 -1.77266E-4 1.23456E-4
5 0.16841 3.19013E-4 -8.89381E-5
6 0.16857 -6.23951E-4 -4.35508E-4
7 0.17036 5.92456E-4 -2.43866E-4
8 0.17052 -1.49598E-3 -4.03107E-4
9 0.17251 -1.56418E-4 8.14962E-4
10 0.17470 -2.63753E-4 -1.41761E-4
11 0.19989 9.76196E-4 2.2143E-4
12 0.20545 7.95418E-4 -3.33889E-4
13 0.24966 -4.40336E-4 4.90649E-4
14 0.25000 -8.01415E-4 -1.23769E-4
15 0.25395 4.62242E-4 1.69908E-3
16 0.25431 -1.26051E-4 -1.47369E-3
17 0.25631 8.87872E-5 -4.22187E-4
18 0.25667 -6.2228E-4 -9.64571E-5
19 0.25876 -3.50649E-3 2.50973E-4
20 0.26122 9.3387E-4 1.28464E-3
21 0.33303 -1.11831E-3 -2.35353E-3
22 0.34071 -2.39364E-3 4.31095E-4
23 0.34135 -7.92386E-4 6.27846E-4
24 0.34502 -2.84485E-3 -4.76201E-3
25 0.34943 5.22356E-4 -3.83936E-4
26 0.48977 -3.08837E-4 1.09024E-3
27 0.49109 5.88904E-4 1.87311E-3
28 0.49863 1.96508E-2 4.78554E-4
29 0.49932 1.5865E-4 -2.51742E-3
30 0.50000 -6.69107E-2 -2.79788E-2
31 0.50798 5.36164E-3 1.33812E-5
32 0.50924 -2.15679E-3 -3.36803E-3
33 0.51606 1.28183E-3 2.16341E-3
34 0.51679 -2.0622E-3 -2.40332E-4
35 0.51753 -1.82682E-2 4.69059E-2
36 0.51826 2.80424E-4 8.85558E-4
37 0.52608 -1.91793E-3 -1.65492E-3
38 0.52743 -6.62221E-3 9.71001E-3
39 0.53632 -3.80515E-3 -3.05923E-4
40 0.53772 2.16689E-3 1.121E-4
41 0.54697 -4.64541E-4 1.87692E-3
42 0.54843 1.7323E-4 3.82443E-4
43 0.89909 3.86154E-6 2.18172E-4
44 0.92942 6.22662E-3 -6.79605E-3
45 0.93417 -8.3993E-4 1.4065E-3
46 0.96244 -9.3988E-3 7.41234E-3
47 0.96696 1.20508E-3 1.67305E-3
48 0.99185 6.64818E-4 -2.39781E-3
49 0.99455 -3.1786E-3 2.67895E-3
50 0.99727 1.64346E-1 1.43607E-1
51 1.00000 3.21661E-4 7.74629E-3
52 1.00275 4.58853E-2 5.7229E-2
53 1.00551 4.77698E-3 7.22353E-3
54 1.02954 1.24454E-3 5.9996E-4
55 1.03472 7.05917E-3 -5.87213E-3
56 1.04061 -1.45979E-3 -6.37846E-4
57 1.06951 3.43921E-3 -8.98541E-4
58 1.07581 9.02207E-2 -4.7178E-2
59 1.11346 2.85231E-3 -1.33185E-3
60 1.11951 -1.09509E-2 -1.52069E-2
61 1.16035 1.59355E-4 -1.11336E-3
62 1.16693 -1.21754E-3 2.12633E-3
63 1.21136 1.27373E-4 2.10444E-4
64 13.66079 -3.68691E-3 -6.05323E-3
65 14.76529 -6.01756E-3 -1.9733E-3
66 27.55455 4.10003E-3 1.69511E-2
67 31.81193 1.31325E-4 4.70557E-5
68 182.62118 -6.00702E-2 -1.41631E-2
69 365.25998 1.08487E-1 -7.26601E-3
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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