There is an issue with this page : announcements/Course/cs373/CourseRev/feb2012, on Udacity domain (I cannot past the complete URL)
It also indicates that HW is due February 27, but WolframAlpha url indicated is for February 28 !

per the announcements page

HOMEWORK 1 EXTENSION AND SCHEDULE CLARIFICATION
Peter Chapman - 07:23:09 AM Feb 27, 2012

In the hectic days prior to launch we had some internal miscommunication about homework due dates for CS 373. This led to conflicting information presented in various course documents.

We’d like to apologize for any confusion that this has caused. We want to ensure that none of our students are unfairly penalized for this mistake so we are extending the due date for the first homework to Wednesday at 23:59 UTC. This extension applies to the first homework only!

Future homeworks for CS 373: Programming a Robotic Car will be due on Mondays at 23:59 UTC. New homework assignments for CS 373 will be released on Mondays at 23:59 UTC.

We will be posting the homework for Unit 2 according to this schedule, so this week there will be a brief period of overlap where the homework for Units 1 and 2 will both be out.

Unit 2 lectures will be posted in the next 24 hours.

We will keep registration open, so it is not to late for new students to join the class.

Thanks for your understanding. Keep learning!

And despite numerous tries to inform the course staff about this, it's still wrong on the announcements page, as Maxime says here. Please fix before it's too late! :-) If there's a better way to communicate to the staff about this kind of problem than a question or comment on the forum, please advise. Thanks!