dateAsUtcIso function

String? dateAsUtcIso(
  1. DateTime? d
)

Write as UTC midnight ISO (e.g. 2025-09-06T00:00:00.000Z)

Implementation

String? dateAsUtcIso(DateTime? d) {
  if (d == null) return null;
  return DateTime.utc(d.year, d.month, d.day).toIso8601String();
}