For a two-zone meter: enter the day and night readings apart. The calculator counts each zone at its rate and the total.
Enter the readings and the rate to see the amount here.
The volume of each zone is its current reading minus the previous one. The amount of a zone is its volume times the zone rate. The total is day plus night.
The meter shows the zones in turn, usually marked T1 and T2. T1 is day, T2 is night. Check the marks on your meter.
From 23:00 to 7:00. The rest of the day is the day zone.
It does when a large part of your use falls at night: a water heater, a washing machine, charging. Compare the amount here with the single-zone rate on the electricity calculator page.
Komunalka is an independent service. It is not a government entity and does not represent government bodies or utility providers.