Yes, but you will have to adjust it by 11 days difference between the lunar (Islamic) and solar (Gregorian) calendar for each Zakat period. This adjustment is done by multiplying the rate of Zakah which is 2.5% by 1+ 11/354. The rate then becomes 2.578% for the solar year.
B. Please note however that all Schools of Fiqh agreed that it is preferable to use the Islamic calendar.