Khepra is the Egyptian god of dawn, morning and sun-rise and is often represented as a dung beetle (or dung beetle-headed). As he Ra always emerged from the dark depths of the Duat everyday as his aspect of Khepra, Khepra is viewed as the god of rebirth and renewal as well, akin to how the scarab lays its eggs in a ball of dung and rolls it to hide in a safe place. From this unlikely substance the Egyptians observed new life emerging, seemingly from the Earth. However, as a god himself, Khepra never really had his own independent cult.
Now, I am not really sure about this deity since I used to think that he and Ra were the same being(Atum-Ra) and that Atum is not really an aspect of Ra. However, it is said that In the Old Kingdom Atum was linked specifically with the evening sun, while Ra or the closely linked god Khepri were connected with the sun at morning and midday.
Now, I know that I already told you about Atum but I am still under the impression that Atum and Ra are the same and that one is not an aspect of another, so, if one who shared my same belief, or just wanted to know more, I will share with you about Khnum. Khnum is the Egyptian god of creation, the Nile, and, of corse, evening.
Since the annual flooding of the Nile brought with it silt and clay, and its water brought life to its surroundings, he was thought to be the creator of the bodies of human children, which he made at a potter's wheel, from clay, and placed in their mothers' wombs. He later was described as having moulded the other deities, and he had the titles Divine Potter and Lord of created things from himself.
As for being the god of the evening, Khnum is mostly said to be an aspect of Ra. Sometimes, he is even said to be the Ba of Ra. However, some legends describe him to be a separate entity from Ra himself, who just accompanies and protects Ra during his journey throughout the Duat.