Geez, not only down the exact day but the exact hour! Quite a contact you have there!
As a point of reference for anyone who cares to this level, my order was finalized first week of Dec, so about a month before yours. I was told "March/April for build start. I asked my dealer for status on March 14 and was told my status was "locked" meaning my build is underway. Unfortunately I hadn't asked for that info previously so no idea when my build actually started. But in a worst case scenario, if my build started on that day, March 14, then it started 3 months and 1 week after I finalized my order. In your case, it looks like it will be more like 4 months and 1 week after order finalization. So yep, continuing the Lotus tradition of no rhyme or reason.
So my last question, if I can push this at bit further is, it's been roughly guided to me that production is taking approx 2-3 months. Do you or your contact know if production is actually taking closer to 2 months or closer to 3? Or something else?