You are correct, 30x60 is 1800. But also note that 31x60 is 1860.

The reason as to why it's specifically 1840 days could be due to the number of Q post deltas involving the placeholders lining up on Nov 11th.

Additionally, you could interpret 'Done in 30' as 'Done within the 30th cycle.' And as you can see, 1840 days clearly falls between the 30th and 31st cycle.

Perhaps it would be helpful if the OP of this post or whomever made this diagram could break down their thought process by which they reached this conclusion.

You are correct, 30x60 is 1800. But also note that 31x60 is 1860.

The reason as to why it's specifically 1840 days could be due to the number of Q post deltas involving the placeholders lining up on Nov 11th.

Additionally, you could interpret 'Done in 30' as 'Done within the 30th cycle.' And as you can see, 1840 days clearly falls between the 30th and 31st cycle.

Perhaps it would be helpful if the OP of this post or whomever made this diagram could break down their thought process by which they reached this conclusion.