zenith
nounUK /ˈzɛnɪθ/
US /ˈziːnɪθ/
The highest point in the sky, right above your head.
At noon, the sun reached its zenith and cast almost no shadow.
OTHER MEANINGS
2. The highest or best point of something.
Her career reached its zenith when she won the gold medal.
3. The point in the sky directly above an observer.
The star passed through the zenith at midnight.
4. The time when something is strongest or most successful.
The empire was at its zenith in the 16th century.