nasa.apod_date

stable Standard

Astronomy Picture of the Day for a given date (1995-06-16 onward).

GET /v1/nasa/apod_date

What you get#

One Nasa record in Onekey's unified shape, in data. If the record does not exist you get a 404 not_found and are not charged.

What it costs#

Standard · 1 credit for a fresh fetch, charged only when it succeeds.
Free when served from cache (0.2 credit for a cached response over 100 KB).
Free if the request is invalid (never charged) or the source fails or reports not found (refunded).

Parameters#

Name	Type	Required	Default	What it is	Constraints
`date`	string	yes	(required)	Date YYYY-MM-DD	max 10 chars; must match `\d{4}-\d{2}-\d{2}`; trimmed

Request#

curl "https://api.onekey.dev/v1/nasa/apod_date?date=2024-01-01" \
  -H "x-api-key: YOUR_API_KEY"

Try it

Add your key to run this call right here. No key? Get one free. The key stays in this tab.

Recorded response#

A real Nasa response, recorded and returned in Onekey's shape. Fields the platform does not provide are null.

json

{
  "success": true,
  "data": {
    "content": {
      "title": "NGC 1232: A Grand Design Spiral Galaxy",
      "text": "Galaxies are fascinating not only for what is visible, but for what is invisible. Grand spiral galaxy NGC 1232, captured in detail by one of the Very Large Telescopes, is a good example.  The visible is dominated by millions of bright stars and dark dust, caught up in a gravitational swirl of spiral arms revolving about the center. Open clusters containing bright blue stars can be seen sprinkled a",
      "createdAt": "2024-01-01T00:00:00Z"
    },
    "media": {
      "url": "https://apod.nasa.gov/apod/image/2401/ngc1232b_vlt_960.jpg",
      "thumbnailUrl": null
    },
    "entity": {
      "url": "https://apod.nasa.gov/apod/image/2401/ngc1232b_vlt_3969.jpg",
      "category": "image"
    },
    "author": {
      "displayName": null
    }
  },
  "metadata": {
    "platform": "nasa",
    "endpoint": "apod_date",
    "cached": false,
    "stale": false,
    "age_s": 0,
    "fetched_at": "2026-01-01T12:00:00+00:00",
    "credits_charged": 1,
    "request_id": "7f3a9c2e5b1d4c8fa2e6d0b9c4f18e37"
  },
  "error": null
}

Field mapping#

How this endpoint's source fields become Onekey's unified schema. Fields the source lacks come back as null.

Source path	Onekey field	Transform
`title`	`content.title`	-
`explanation`	`content.text`	-
`url`	`media.url`	`safeUrl`
`hdurl`	`entity.url`	`safeUrl`
`media_type`	`entity.category`	-
`date`	`content.createdAt`	`toIsoDate`
`copyright`	`author.displayName`	-
`thumbnail_url`	`media.thumbnailUrl`	`safeUrl`

Caching and freshness#

Fresh for about 1 hour. Repeat calls in that window are served from cache and are free.
Between 1 hour and 1 day the cached copy is still served instantly and marked stale: true while Onekey refreshes it in the background.
If the source is down when a refresh is needed, the last copy can be served for up to 1 day more (marked stale).
A "not found" is remembered for 5 minutes and is free.
The cache is shared across all customers, which is what keeps repeat calls cheap.

What can go wrong#

Status	Code	What to do
401	`unauthorized`	Check the `x-api-key` header.
402	`insufficient_credits`	Add credits; your balance must cover the price.
404	`not_found`	That record does not exist. Free; do not retry.
422	`invalid_params`	Fix the parameters using the table above. Free.
429	`rate_limited`	Wait `Retry-After` seconds, then retry.
502	`upstream_error`	The source failed. Refunded; retry with backoff.

See Errors for the full list and retry guidance.

Status: stable (verified against the live source).