Helen liked eating her lunch at midday, starting at about one o'clock PM.
We break for lunch at midday.
No the word "midday" is not hyphenated.
At midday, the azure sky is often too bright to look at directly.
A nice bowl of soup will suffice for my midday meal. The bandits are supposed to meet at their den tomorrow at midday.
Right around midday the temperature got a lot warmer.
Yes, "midday" is typically not capitalized unless it appears at the beginning of a sentence.
afternoon
afternoon
afternoon
Noon
midday
midday