The Registrar’s office has updated the academic calendar to account for the later start of the Spring 2020 term:
https://www.lawrence.edu/s/registrar/calendar/cal1920.
Note that the reading period remains the same as in the original calendar (May 7-10), which means that it will be taking place at the end of week 5. We will be counting weeks as usual, so the week of April 6 will be “Week One” of a nine-week term.