I believe you’re talking about “twilight”, as it’s called by Bulbapedia.
Morning
Morning tints everything a pale blue color, changing from dark blue of night into bright blue of daytime. Morning lasts from 4:00 a.m. to 9:59 a.m. (04:00 - 9:59).
Day
Everything takes on its natural color during the day. Day lasts from 10:00 a.m. to 7:59 p.m. (10:00 - 19:59), with twilight lasting from around 5:00 p.m. (17:00) until night sets in.
Those times, according to Bulbapedia, are the times that Eevee can evolve it Espeon (morning and day).
Soure
Source 2
Basically twilight counts as day so yes.
Hope this helps! :)