The playground

Try any of 1042 endpoints — live.

Pick an endpoint, load a working example, tweak the params, and send — no signup to try. Results render the way the data deserves; raw JSON, headers & code are one tab away.

Playground demo key · api.reefapi.com
post/holidays/v1/next_holidays1 credit

upcoming public holidays (next ~365 days) with daysUntil

Working example
Parameters

2-letter ISO-3166 country code (e.g. US, GB, DE, TR, JP). 123 countries supported — call action='countries' for the full set. Case-insensitive.

Optional 'as of' date (ISO YYYY-MM-DD) to compute daysUntil from; defaults to the current UTC date.

request preview
curl -X POST https://api.reefapi.com/holidays/v1/next_holidays \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"country":"US"}'

Hit Send to run this endpoint live.