Sunrise and sunset times API

$0.001 per call with a key ($0.01 paid per call from a wallet) · failed calls are never charged · no account needed: a card key or USDC

Sunrise, sunset, solar noon, civil dawn and dusk (UTC) and day length for any place and date, computed with the standard solar equations; handles polar day and night. No outside service. Use for photography, events and outdoor planning.

When to use it

Get sunrise, sunset and day length for any coordinates and date
Plan outdoor work or photography

Run it free (3 free calls) Buy credits by card (from $1) Example result (JSON)

$0.001 per call with prepaid credits: $1 by card pays for 1,000 calls, with no account and no subscription.

Inputs

Name	Type	Description
`lat` (required)	number	Latitude (-90 to 90)
`lon` (required)	number	Longitude (-180 to 180)
`date`	string	Date (default today)

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://glyphcall.com/sun?lat=59.33&lon=18.07"

Or one of your 3 free calls, no key:

curl "https://glyphcall.com/sun?lat=59.33&lon=18.07&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.

Live result

The real answer to the request above, read 2026-11-15 18:44 UTC and refreshed every 15 minutes.

{
  "date": "2026-11-15",
  "sunrise": "2026-11-15T06:40:53.173Z",
  "sunset": "2026-11-15T14:23:53.199Z",
  "solarNoon": "2026-11-15T10:32:23.186Z",
  "civilDawn": "2026-11-15T05:53:18.733Z",
  "civilDusk": "2026-11-15T15:11:27.638Z",
  "dayLengthMinutes": 463,
  "polar": null
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is sun, and the first 25 successful calls are free:

https://glyphcall.com/mcp

Questions

Is it computed or looked up?

Computed from the coordinates and date.

How do I pay?

Each successful call costs $0.01; failed calls are not charged. The first 3 calls are free (25 through an MCP client). Then pay with card credits (from $1; the key goes in an Authorization header or, for clients that can only fetch a URL, as api_key= in the URL) or per call in USDC over x402 or MPP. No account is needed.