day to year can be correct. read carefully, in context.
But not when other specifics are given. Daniel 8 for days is "mornings and evenings." That is not a prophetic year, but 6.3 years, the exact time of the Maccabean revolt from 67 BC to 60 BC, and Antiochus Epiphanes IV, the Greek emperor, defiled the Jewish temple by slaughtering a pig, an unclean animal, on the altar.
1260 days is also referred to as 42 months and a time, times and half a time, so is not broken down into prophetic years.
Daniel 9's 70 weeks is not given in any other form, so is 490 years. day/year
Hosea 6:1-3 is two days and one day. The day is constant, but instead of day/1 year, it is day/1000 years. 2000 years plus 1000 year Millennium.