The person they're replying to who said "one month".

One is singular.

I didn't say that, though.

They weren't replying to you, they were replying to neurocline.

then they should have replied directly to neurocline, who didn't say anything about 900 hours.

Sorry, that was neurocline responding directly to vasco. Either way, they weren't responding directly to you.

vasco was the one responding to you.