Sirius can be observed in daylight with the naked eye under the right conditions. Ideally, the sky should be very clear, with the observer at a high altitude, the star passing overhead, and the Sun low on the horizon. These conditions are most easily met around sunset in March and April, and around sunrise in September and October. These observing conditions are more easily met in the Southern Hemisphere, owing to the southerly declination of Sirius.
Sirius can be observed in daylight with the naked eye under the right conditions. Ideally, the sky should be very clear, with the observer at a high altitude, the star :passing overhead, and the Sun low on the horizon. These conditions are most easily met around sunset in March and April, and around sunrise in September and October. These observing co:nditions are more easily met in the Southern ,Hemisphere, owing to the southerly declination of Sirius.