"date of the day before a night" sounds confusing
On https://wafertest.debconf.org/register/step-6
The "night of" is the date of the day before a night. So accommodation
on the night of 6 Aug ends on the morning of the 7th.seems confusing.
Maybe instead just say
(Example: 2018-07-28 means from noon 2018-07-28 to noon 2018-07-29)Edited by Dan Jacobson