Calculating the age of an animal for qurbaani according to the Islamic date

Q: We slaughter goats for Qurbaani. We understand that a goat needs to be one year old. Must it be an Islamic year, or English?

The farmer gave us the date of the birth of this goat, and it was born on the same date as Eid (Islamic date), exactly a year ago. So it's exactly 1 year old, must we still check if it was born in the morning or afternoon, to make make sure we dont slaughter it before time?

Is owning an image different from creating or drawing an image?

Q: Is owning an image different from creating or drawing an image? I came to know that several Sahaabah and the grandson of Hadhrat Abu Bakar Siddiq (radhiyallahu anhu) owned a curtain that had a picture of birds and phoenix.

Also, several Sahaabah wore rings for stamping that had drawings of men with swords. Kindly clarify the issue.