  We study the problem of all sky search in reference to continuous
gravitational wave (CGW) whose wave-form are known in advance. We employ the
concept of Fitting Factor and study the variation in the bank of search
templates with different Earth azimuth at t=0. We found that the number of
search templates varies significantly. Hence, accordingly, the computational
demand for the search may be reduced up to two orders by time shifting the
data.
