http://forum.awd.ru/viewtopic.php?f=808&t=56744"Q: В визе написан срок пребывания - 90 дней, а срок действия визы - с 18.05.2010 по 18.05.2011 (т.е. 1 год). Это значит 90 дней в год?A: Нет, это значит 90 дней в каждое полугодие. Срок пребывания пишется всегда на полгода, отсчёт полугодий идёт с первого въезда в шенген. Дословно из визового кодекса ЕС (стр. 38, ANNEX VII):    4. ‘DURATION OF VISIT ... DAYS’ heading:    This heading indicates the number of days during which the visa holder may stay in the territory for which the visa    is valid. This stay may be continuous or, depending on the number of days authorised, spread over several periods    between the dates mentioned under 2, bearing in mind the number of entries authorised under 3.    The number of days authorised is written in the blank space between ‘DURATION OF VISIT’ and ‘DAYS’, in the    form of two digits, the first of which is a zero if the number of days is less than 10.    The maximum number of days that may be entered under this heading is 90.    When a visa is valid for more than six months, the duration of stays is 90 days in every six-month period. "