glansdag znamená v Angličtina

heyday [heydays]▼(a period of success, popularity or power)
noun
[UK: ˈheɪ.deɪ] [US: ˈheɪ.ˌde]

prime [primes]▼(most active, thriving, or successful stage or period)
noun
[UK: praɪm] [US: ˈpraɪm]