Which two constellations do Cowherd and Weaver Girl belong to?

Altair: Located in the constellation Aquila, silvery white, with a diameter equivalent to 1.6 times that of the sun, located on the east bank of the Milky Way.

Vega: Located in Lyra, it is bigger and brighter than Altair, 33 times as big as the sun, and located on the west bank of the Milky Way.

Cowherd and Weaver Girl live on both sides of the Milky Way, separated by 14 light years, and they have never met. "Meeting on the Chinese Valentine's Day Bridge" is just people's kind wishful thinking.

The best time to see the stars on Tanabata is July 29th and August 3rd. At about 10 in the afternoon, Vega appeared near her head, and then gradually headed west. The position of Altair is slightly lower.