"वह दोपहर में घर आता है।"

Translation: He comes home in the afternoon.

[MarcinM85]

Why दोपहर is used with में but शाम with को?

[Zesul]

दोपहर को isn't wrong; it's just used less often than दोपहर में. The reason दोपहर usually takes में and शाम, को may not be more than idiomatic and here's my guess: "afternoon" is a span of time, and hence events happen in that span of time, while "evening" is perceived as a relatively shorter period of time—perhaps short enough to be seen as a point of time—and hence events happen at that time.

[dinekum]

Then what will use for दोपहर के बाद ??