1- between days 788 and 795 of the Kepler mission and
2- between days 1510 to 1570
The first event appears to have been a single transit causing a star brightness drop-off of 15 percent as per the chart below, whereas the second event was a burst of several transits, possibly indicating a clump of different objects, forcing a brightness dip of up to 22 percent. To cause such dips in brightness, these transiting objects must be huge.
it is located away ,000 AU from KIC 8462852 and whether it’s a binary partner or an interstellar visitor, its presence may have caused some cometary turmoil. Like the other scenarios, however, the exocomet explanation still falls short of being fully satisfactory.