Hi,
Iโm new using your API ; first, Iโd like to thank you for your API!
However, I found some issues in datas: for some places there is only 2 tides per day. This is something not possible, isnโt it ?
For example :
Tuban, EastJava:
[latitude] => -6.8976
[longitude] => 112.0649
Here is a sample of what I get :
[1] => Array
(
[timestamp] => 1648544242
[datetime] => 2022-03-29T08:57:22+00:00
[height] => 0.59062422347307
[state] => HIGH TIDE
)
[2] => Array
(
[timestamp] => 1648595837
[datetime] => 2022-03-29T23:17:17+00:00
[height] => -0.58619141026122
[state] => LOW TIDE
)
[3] => Array
(
[timestamp] => 1648632761
[datetime] => 2022-03-30T09:32:41+00:00
[height] => 0.51990518493361
[state] => HIGH TIDE
)
[4] => Array
(
[timestamp] => 1648683486
[datetime] => 2022-03-30T23:38:06+00:00
[height] => -0.47962300339067
[state] => LOW TIDE
)
[5] => Array
(
[timestamp] => 1648720492
[datetime] => 2022-03-31T09:54:52+00:00
[height] => 0.42013797028488
[state] => HIGH TIDE
)
[6] => Array
(
[timestamp] => 1648770418
[datetime] => 2022-03-31T23:46:58+00:00
[height] => -0.34142932775531
[state] => LOW TIDE
)
[7] => Array
(
[timestamp] => 1648806960
[datetime] => 2022-04-01T09:56:00+00:00
[height] => 0.30129878818494
[state] => HIGH TIDE
)
**One more example, for Saona island, Dominican republic:
**
[latitude] => 18.1530876
[longitude] => -68.6797264
It looks pretty good until 2nd April (with a tide every about 6hours), but after it seems to miss some high and low tides... Very strange :
[16] => Array
(
[timestamp] => 1648869784
[datetime] => 2022-04-02T03:23:04+00:00
[height] => 0.089493350303962
[state] => HIGH TIDE
)
[17] => Array
(
[timestamp] => 1648927617
[datetime] => 2022-04-02T19:26:57+00:00
[height] => -0.052642306415331
[state] => LOW TIDE
)
[18] => Array
(
[timestamp] => 1648959076
[datetime] => 2022-04-03T04:11:16+00:00
[height] => 0.10233530753627
[state] => HIGH TIDE
)
[19] => Array
(
[timestamp] => 1649014657
[datetime] => 2022-04-03T19:37:37+00:00
[height] => -0.074919229701788
[state] => LOW TIDE
)
[20] => Array
(
[timestamp] => 1649048519
[datetime] => 2022-04-04T05:01:59+00:00
[height] => 0.10832207680381
[state] => HIGH TIDE
)
[21] => Array
(
[timestamp] => 1649101582
[datetime] => 2022-04-04T19:46:22+00:00
[height] => -0.09330840002949
[state] => LOW TIDE
)
[22] => Array
(
[timestamp] => 1649138052
[datetime] => 2022-04-05T05:54:12+00:00
[height] => 0.10936373640266
[state] => HIGH TIDE
)
If you need more example, please ask. I hope you will be able to fix this!
Best regards,
Tony
Doe mee aan de discussie - voeg hieronder een opmerking toe
Hi Tony,
two tides per day could be OK because there are various types of tidal cycles (as diurnal, semi-diurnal and mixed). You can read more for example at https://oceanservice.noaa.gov/education/tutorial_tides/tides07_cycles.html.
First look at the examples you posted seemed OK to me, if you have any other question just let me know here or at api@marea.ooo.
Have a great day!
Vojta