get
https://openexchangerates.org/api/historical/:date.json
Get historical exchange rates for any date available from the Open Exchange Rates API, currently going back to 1st January 1999.
Like latest.json, our /historical/ route provides a standard response object containing all the conversion rates for all available symbols/currencies on your requested date, labeled by their international-standard 3-letter ISO currency codes.
The historical rates returned are the last values we published for a given UTC day (up to and including 23:59:59 UTC), except for the current UTC date.