Built for these use cases
Same compute kernel underneath. Sharp packaging for the buyers who need it most.
Ephemerides
Sun and moon rise/set times for any latitude, longitude, AND elevation on Earth — elevation correction is unique among ephemerides APIs. Includes twilight phases, transit times, and lunar phase.
Photo planning apps
Golden hour, blue hour and sunrise/sunset accurate at altitude, with a season-ahead horizon so trips can be planned months out.
Starter / Pro
Prayer-time apps
Five prayers, every major calculation school, selectable Asr method. Elevation correction matters in mountain towns and most APIs skip it.
Starter / Pro
Marine planners
Civil and nautical twilight, first and last light, moon phase and altitude for tide correlation. Webhooks for waypoint reminders.
Pro
Smart-home / circadian
Daily refresh per home, civil twilight as the warm-light anchor, solar noon as the cool peak. Elevation matters in valleys.
Pro (per integration vendor)
Agriculture irrigation
Sunrise and civil dawn as irrigation-start anchors, with the bulk endpoint covering multi-site growers in one call.
Pro / Business by scale
Insurance forensics
Historical was-it-daylight-at-this-time-and-place for legal evidence, backed by a court-citable methodology page.
Pro (low volume, high margin)
Solar
Precision solar geometry and clear-sky irradiance for any location on Earth. Solar position (azimuth/altitude/zenith), Direct, Diffuse and Global Horizontal Irradiance under clear-sky conditions, and Daily Light Integral for agriculture. Backed by NREL SPA-equivalent computation (JPL DE421) and the Bird Clear Sky Model, with elevation as a first-class input.
PV monitoring SaaS
Compare site output against the clear-sky theoretical maximum for anomaly detection, bulk every 15 minutes across the whole portfolio.
Business / Enterprise
Greenhouse / CEA agtech
Daily Light Integral feeds the supplemental-lighting scheduler across every greenhouse in a multi-site deployment.
Pro / Enterprise
Building-energy modelling
Sun-path arrays at five-minute resolution for modelling solar gain through glazing.
Pro (per firm)
EV-charge scheduling
Per-home clear-sky forecast combined with weather to decide when to draw from the wall versus the array.
Business
Tides
Astronomical tide heights, high/low waters, harmonic constituents and combined tide+sun/moon windows for any coastal point on Earth, computed from the FES2022 global tide atlas. Any date, past or future.
Fishing & angling apps
Tide turn is bite time. The window at the user's exact mark on any coast worldwide, with moon phase for solunar scoring in the same call.
Starter / Pro
Coastal photography
Low tide crossed with golden hour is the shot list. One /window/ call returns both, plus blue hour and moon phase.
Starter
Surf & paddle apps
Session planning around tide state at the actual break or launch point, not the harbour down the coast.
Starter / Pro
Tidal walks & guides
Crossing windows for causeways and tidal islands months ahead — a whole season of guidebook tables in one bulk call.
Pro
Research & coastal planning
Decades of hindcast or forecast for any shoreline without per-station licensing, plus harmonic constants for offline work.
Pro / Business
Across more than one API
These need two subscriptions on one account — and they are where the catalogue compounds.
Agrivoltaics planning
Sun path and DLI from Solar for the panels, sunrise and sunset from Ephemerides for the irrigation schedule underneath them.
Uses: Ephemerides + Solar
Two subscriptions on one account
Drone & field ops
Shoots, surveys and shore work scheduled around water level, daylight and tide together rather than one at a time.
Uses: Ephemerides + Tides
Pro / Business
Tide and ephemerides output is informational astronomical model data — no storm surge, and not for navigation or depth-critical decisions. Safe use →
Don't see your use case?
The same compute kernel underneath powers any sun / moon / horizon / tide question. Tell us what you're building — we love a good integration story.