auspicious

adjective3

1. •
   Of good omen; indicating future success.

   • It was a boast of Napoleon, that the very weather owned the influence of his auspicious star—his triumphal entry, his procession, or his fête, were always marked by sunshine. — 1834
2. •
   Conducive to success.

   • This is an auspicious day.
3. •
   Marked by success; prosperous.

   • Sure, such a Day as this vvas never seen! / The Sun himself, on this auspicious Day, / Shines like a Beau in a nevv Birth-Day Suit: […] — 1730