In Genesis 8:22 God is talking about the condition; “While the earth remains.”

This earth is not going to remain for ever, considering this physical earth, but there is a spiritual perfect earth and it will be a time when seedtime and harvest, cold and heat, winter and summer, day and night will stop existing.

Those with Jesus will not get tired anymore, no need for sleep, no need to labour for food, no money to worry about, no struggle with your neighbour, the “time” has gone, the past, present and future is in the present with God.