I'm thinking that if you put your eggs in on Feb. 18th at 12:00 PM you should lockdown on the 8th at 12:00 pm. (I'm going to look at a calendar again....)Yep...I think that's right.
I totally think you are right. I read this other thread (well, I read like a zillion but I am referring to the one that made the most sense to me) and it basically said, if you put your eggs in on a Friday, they are due to hatch on a Friday. Count back 3 days to the time of day you started (in my case it was 10:00 am) so Tuesday, the 8th at 10:00 am will be the exact right time for me to go to lockdown. Of course, I am going to wait until that evening since I will be working, so give or take a few hours, I will soon be on the home stretch.
These are my first Marans, also, and they are shipped eggs from
Ebay. I sent several prior customers of the person I bought the eggs from a message asking how the hatch was from this seller. Two responded and said the hatch was very good (one had a 90% and the other 75%). Oddly, they thought I was the seller asking as a follow up. I did that with a couple of other
Ebay sellers, and their hatch rates were not nearly so good. Therefore, I feel like its most likely a good batch of eggs.
I have a better incubator on the way and won't try again until it gets here. Those French Black Copper Marans eggs are just to expensive to mess around with!