Wikipedia
Sunrise service is a worship service on Easter practiced by some Protestant churches, replacing the traditional, ancient Easter Vigil preserved by the Roman Catholic, Eastern Orthodox, Anglican, and Lutheran churches.
The service takes place outdoors, sometimes in a park, and the attendees are seated on outdoor chairs or benches.
Usage examples of "sunrise service".
Dawn came up and with the sunrise, we recited our sunrise service, with the prince and the abbot standing silent.
AT LAST, we said our final Sunrise Service in Hell, and we marched out to war.
The bride wore the same white silk dress she had worn to the sunrise service in Marines Park.
While I pronounced Words of Passage over the body, he declared, he would turn on the closed-circuit Telerama, as was his wont at the end of a Spring-Carnival party, so that the assemblage could watch the Sunrise Service on Founder's Hill, and the first rays of morning strike Tower Clock.
Well, that's the Spring Sunrise Service going on on the Hill -- you can't see the actual servicing because it's too dark.
I'll have the boys ready your wagon and horses at the bell for Sunrise Service from the Cathedral.
I led the men in the sunrise service, even though we couldn't see the sun, and we moved out.
I got so blue that Emerson drove me back to Arkansas for a family reunion and on the way back through Colorado took me to the Sunrise Service at the Garden of the Gods where the Brass family absolutely stole the show.