Presets and sharing
Inputs
Tidal events (up to 6 events)
| Type | Time (HH:MM) | Tide level (m) | Delete |
|---|
Tidal events are automatically sorted and displayed in chronological order.
Tide data provider
External tide feeds are region-dependent. If no feed is available, enter the tide events manually.
Results
sunrise/sunset
- sunrise
- —
- sunset
- —
- photoperiod
- —
- condition
- —
Moon age and phase
- Moon age
- —
- Moon phase
- —
- Illuminance (approximate)
- —
Moon age and phase are estimated with an average lunar-cycle model.
Astronomy tools
Find related tools for sunrise, twilight, moon phase, and observing planning.
Tide (manual input)
| Type | time | Tide level (m) |
|---|
- Maximum tide level
- —
- minimum tide level
- —
- Tidal difference (maximum-minimum)
- —
The curve is not displayed because there are fewer than 2 tidal events.
Assumptions & limits
- Moon age/moon phase/illuminance are approximate estimates based on a simple model (lunar month 29.530588853 days).
- The tidal curve is a simple display that connects the extreme values of high tide and low tide using cosine interpolation.
- Actual tidal values vary depending on wind, atmospheric pressure, topography, river inflow, etc. Please be sure to check the official information.
FAQ
Are the tide values accurate?
Since it is based on manual input or external forecast data, there may be differences from the actual tide level. Please be sure to follow official information and local warnings when making your final decision.
Why is the moon age different from other sites?
This tool uses a simple model. There may be differences from strict astronomical calculations.
What if automatic tide import is unavailable?
Use the manual tide-event mode. This page is designed to stay useful even when no external tide feed is available for your region.
How to read the tide and moon summary
What this page is for
Use this page to compare one location and date across sunrise, sunset, day length, moon phase, and manually entered tide events. It is designed for planning and classroom discussion, not for marine safety decisions.
Suggested workflow
Start by checking the latitude, longitude, date, and time zone. Then review the solar section, the moon section, and finally the tide table so each block answers a different question instead of mixing everything at once.
What to verify before using the output
If the moon timing or tide profile looks odd, confirm the time zone first and recheck the tide-event times you entered manually. Small input mistakes can shift every downstream label.
Important limits
Moon age and illumination use a simplified lunar model, and tide values depend on the event list you provide. Always compare with official local tide and weather information before coastal activity.