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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)
14 Jan 2026 05:59:00
Latency
5740
Level
0.9

Harmonics

Points count
6480677
First date
11 Mar 2011 05:00
Last date
14 Jan 2026 05:59

Click on following link to see data:

Harmonics Constatns
Comp # Period (day) Cos factor (m) Sin factor (m)
0 0.00000 8.48399E-1 0E+0
1 0.12877 -2.96217E-5 -1.10689E-4
2 0.12886 -2.27743E-4 -2.41637E-4
3 0.12938 3.26428E-5 -2.82149E-4
4 0.14707 -1.99985E-4 1.15243E-4
5 0.16841 3.74081E-4 -1.6478E-4
6 0.16857 -6.88828E-4 -4.2412E-4
7 0.17036 5.65809E-4 -3.54038E-4
8 0.17052 -1.49986E-3 -3.3299E-4
9 0.17251 -7.88699E-5 7.95921E-4
10 0.17470 -2.8342E-4 -1.46785E-4
11 0.19989 1.05427E-3 3.86465E-4
12 0.20545 8.22256E-4 -3.44348E-4
13 0.24966 -6.07179E-4 8.08216E-4
14 0.25000 -5.11749E-4 -2.20911E-4
15 0.25395 5.96566E-4 1.99073E-3
16 0.25431 8.38577E-5 -1.55906E-3
17 0.25631 8.77983E-5 -3.64407E-4
18 0.25667 -6.86422E-4 -1.9706E-4
19 0.25876 -3.60466E-3 2.32643E-4
20 0.26122 9.43344E-4 1.40618E-3
21 0.33303 -1.04644E-3 -2.42419E-3
22 0.34071 -2.3496E-3 4.63679E-4
23 0.34135 -8.02513E-4 6.18839E-4
24 0.34502 -2.93849E-3 -4.64145E-3
25 0.34943 4.27925E-4 -3.50905E-4
26 0.48977 -3.44628E-4 1.06098E-3
27 0.49109 6.37393E-4 1.90144E-3
28 0.49863 1.96441E-2 9.70975E-4
29 0.49932 1.34225E-4 -2.04803E-3
30 0.50000 -6.72987E-2 -2.80372E-2
31 0.50798 5.50087E-3 -2.51113E-4
32 0.50924 -1.86621E-3 -3.34066E-3
33 0.51606 1.53234E-3 2.16932E-3
34 0.51679 -1.77504E-3 -8.78393E-5
35 0.51753 -1.85505E-2 4.70439E-2
36 0.51826 3.14448E-4 6.37512E-4
37 0.52608 -1.85465E-3 -1.74605E-3
38 0.52743 -6.61798E-3 1.00035E-2
39 0.53632 -3.7581E-3 -2.99659E-4
40 0.53772 2.1824E-3 1.73186E-4
41 0.54697 -4.86521E-4 1.83081E-3
42 0.54843 2.30864E-4 3.88667E-4
43 0.89909 -1.57527E-4 2.92697E-4
44 0.92942 6.18887E-3 -6.52141E-3
45 0.93417 -7.2928E-4 1.33521E-3
46 0.96244 -9.15689E-3 7.28929E-3
47 0.96696 1.09652E-3 1.73129E-3
48 0.99185 1.06069E-3 -2.60342E-3
49 0.99455 -3.20774E-3 2.21542E-3
50 0.99727 1.6196E-1 1.43634E-1
51 1.00000 6.50946E-4 8.19259E-3
52 1.00275 4.63096E-2 5.79033E-2
53 1.00551 5.02512E-3 7.41579E-3
54 1.02954 1.4701E-3 4.27609E-4
55 1.03472 7.50928E-3 -5.78735E-3
56 1.04061 -1.6547E-3 -9.17716E-4
57 1.06951 3.71054E-3 -1.01498E-3
58 1.07581 8.85458E-2 -4.72992E-2
59 1.11346 2.67474E-3 -1.45329E-3
60 1.11951 -1.09395E-2 -1.51901E-2
61 1.16035 -1.76064E-5 -1.05923E-3
62 1.16693 -1.17632E-3 1.81732E-3
63 1.21136 1.95026E-4 2.29015E-4
64 13.66079 -3.65749E-3 -5.90471E-3
65 14.76529 -6.79054E-3 -2.25286E-3
66 27.55455 4.09688E-3 1.70426E-2
67 31.81193 8.26209E-5 -8.87081E-4
68 182.62118 -6.67656E-2 -1.06398E-2
69 365.25998 1.07246E-1 -1.63855E-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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