Can I report to immigration on a Monday if my 90-day check is due on a Sunday without incurring a fine?

A user inquires about avoiding a fine for late 90-day reporting if the due date falls on a Sunday. Community members clarify that the reporting period allows in-person visits from 15 days before to 7 days after the due date. If the user walks in on the Monday after the due date, they should not incur a fine as long as they are within the allowed time frame. They also mention changes to the online application process that limits submissions to 15 days before the due date.