From when is my issued visa valid?
It is valid from the date of your arrival in Russia mentioned in the visa.
Dates on the visa need to be accurate. But, our suggestion is that you use the full days' duration of your visa, for more flexibility. Therefore, when you get a visa you can travel at any period of your visa duration, but you have to leave Russia before the visa expires.
e.g. If you fill out in the visa application form that you are travelling from 1st to 5th October, it can be possible that visa will be issued only for these dates. Our recommendation for clients is to choose full days duration of a visa. Hotel booking does not need to match with these dates, it is only important that dates from the application form are matching the dates in the invitation.