This is the same issue that Christ Chapel Bible Church had. For some reason the dates are now getting returned as a UTC date. If you convert date to string first before formatting it, it will show correctly. I updated SV's date card setting with this change, and it should be working correctly now.

Code to copy:
{% assign date = Date | ToString %}
<h4>{{ date | Date:'dddd MMM' }} {{ date | Date:'d' | NumberToOrdinal }}</h4>