In Chen's "Climbing Yueyang Tower (I)", what is the poem indicating the geographical location and boarding time of Yueyang Tower?

Dongting East Jiangxi, the curtain is quiet and the sunset is late.

The magnificent Yueyang Tower stands east of Dongting and west of the Yangtze River. At sunset and dusk, there is no night breeze, and the sign on the pavilion is still (time)

Where I boarded, Wu and Shu parted here.

At the moment of walking, Dongting Lake and Junshan are shrouded in twilight (geographical location)