Every 15 minutes we read each source’s published rates, around the clock. Each page shows when it was last updated.
The average shown for a currency is the plain mean of the buy rates, and of the sell rates, of every source quoting that currency at that moment. Not every source quotes every currency. You can always switch from the average to a single source.
Rates are per one unit. Where a source quotes per hundred (the central bank does for the yen and the rouble) we convert it, so everything on the site is lek per 1 unit of foreign currency.
We leave out what is not believable. A quote that sits far from every other source, or that jumps implausibly between two readings, is treated as a publishing error and dropped. A quote with an extreme gap between buy and sell stays visible under its source but is kept out of the average.
The 24h change compares the current mid-rate with the one from a day earlier.
These are published rates, not offers: the rate you get at the counter can differ for large amounts or late in the day. Kursi.al is an information service and does not exchange money.