When buying tickets, it is important to take into account the flight time and the time difference between the departure point and Kamchatka.
The time difference from Moscow is +9 hours. That is, if it is 12:00 in Moscow, then it is 21:00 in Kamchatka.
For example, if your program starts on June 29, it means that you need to be in Petropavlovsk-Kamchatsky on June 29. In that case, fly out of Moscow, Novosibirsk, Irkutsk need June 28. You can fly from Vladivostok, Khabarovsk, Sakhalin and Blagoveshchensk on the same date if there is a suitable flight.
You can arrive at any time on the day or night of the date indicated as the start of the program or earlier.
You cannot arrive the next day, regardless of what is indicated in your program — due to the weather, changes may be made to the program procedure, and then you may skip departure, for which a refund is not provided in such conditions.
The last day of the program is the day of departure.
You can leave at any time on this day or later. You arrive in Moscow on the same day and hour that you took off. With most cities in Russia, everything happens about the same way, maybe an hour late.