/2020-01-01 returns data for 2019-12-31

[dabruh]

HTTP GET https://api.frankfurter.app/2020-01-01 returns the incorrect date:

{
  "amount": 1.0,
  "base": "EUR",
  "date": "2019-12-31",
  "rates": {
    "AUD": 1.5995,
    "BGN": 1.9558,
    "BRL": 4.5157,
    "CAD": 1.4598,
    "CHF": 1.0854,
    "CNY": 7.8205,
    "CZK": 25.408,
    "DKK": 7.4715,
    "GBP": 0.8508,
    "HKD": 8.7473,
    "HRK": 7.4395,
    "HUF": 330.53,
    "IDR": 15596,
    "ILS": 3.8845,
    "INR": 80.19,
    "ISK": 135.8,
    "JPY": 121.94,
    "KRW": 1296.28,
    "MXN": 21.22,
    "MYR": 4.5953,
    "NOK": 9.8638,
    "NZD": 1.6653,
    "PHP": 56.9,
    "PLN": 4.2568,
    "RON": 4.783,
    "RUB": 69.956,
    "SEK": 10.4468,
    "SGD": 1.5111,
    "THB": 33.415,
    "TRY": 6.6843,
    "USD": 1.1234,
    "ZAR": 15.7773
  }
}

This seems to apply to all request for 1st of Jan. https://api.frankfurter.app/2020-01-02 works fine.

[natalie-o-perret]

@dabruh FYI

[natalie-o-perret]

first of Jan. of each year is a closing day, so it's not updated and it returns the data according to ECB doc, so the 31/12 of the previous year