Revelation 8:1 (KJV)

And when he had opened the seventh seal, there was silence in heaven about the space of half an hour

Job 10:5 (KJV)

Are thy days as the days of man? are thy years as man's days

2 Peter 3:8 (KJV)

But, beloved, be not ignorant of this one thing, that one day is with the Lord as a thousand years, and a thousand years as one day.

Hints that there is no time in Heaven, the space of half an hour?- Not half an hour but ‘like half an hour’. A day is like a year/thousand years?