This date falls on a weekend. Interbank FX markets don't trade then, so this is Friday's closing rate carried forward, not a fresh weekend quote.
Rates aggregate roughly 84 central banks and reference sources (via the Frankfurter API), not only the ECB — the source can differ by currency and day.
| Amount | Value |
|---|---|
| 1,000 JPY | 6.64 |
| 10,000 JPY | 66.40 |
| 100,000 JPY | 664.00 |
| 1 million JPY | 6,640.00 |
| 10 million JPY | 66,400 |
| 100 million JPY | 664,000 |
| 2017-12-13 | 0.00661 |
| 2017-12-14 | 0.00661 |
| 2017-12-15 | 0.00663 |
| 2017-12-16 | 0.00664 |
| 2017-12-17 | 0.00664 |
| 2017-12-18 | 0.00665 |
| 2017-12-19 | 0.00664 |
| 2017-12-20 | 0.0066 |
| 2017-12-21 | 0.00659 |