A scriptural day starts in the morning, not in the evening.
YHWH worked during the daylight hours. Then evening came. Then morning. The first day.
Work (Day), Evening, Morning – The first day.
Others seems to think the evening is the start of the day. YHWH warns us of those who say that the night is day.
10 “But please, come back again, all of you,
For I shall not find one wise man among you.
11 My days are past,
My purposes are broken off,
Even the thoughts of my heart.
12 They change the night into day;
‘The light is near,’ they say, in the face of darkness.