当晚 (dàng wǎn): on that evening; the same evening

They set off in the morning to climb the mountain, and returned to the city that same evening.

The wedding was held at noon, and that same evening the newlyweds flew off on their honeymoon.

We had planned to go to the museum in the afternoon, but because it rained, we only managed to go that evening.

He received the interview notification in the morning, and that very evening he bought a high-speed train ticket to Beijing.

The meeting ran from two to six in the afternoon, and at eight that evening they continued the discussion.