I joined a company on April 1st, 2015, so basically the very first day of the fiscal year. (relakhs.com)
Cuomo has made a point of passing «on time» or timely budgets during his tenure in office that are approved by the Legislature before the first day of the fiscal year, April 1. (nystateofpolitics.com)
(The 65,000 quota for 2005 was filled on 1 October, the first day of the fiscal year.) (sciencemag.org)