Chapter 8
Revelation 8:1
Καὶ ὅτε ἤνοιξε τὴν σφραγῖδα τὴν ἑβδόμην, ἐγένετο σιγὴ ἐν τῷ οὐρανῷ ὡς ἡμιώριον.
RBT Translation:
The Silent Half Interval
And when he opened the Seventh Signet-Seal, she became a silent one within the Heavenly One, just as a half time interval.
The Mega Trumpet
and the half interval of herself...
The term ἡμιόριον (hēmiorion), derived from ἡμι- ("half") and ὥρα/ὄριον ("time period" or "boundary/interval"), refers to "half a unit of time" or "a partial interval." In the prophetic and eschatological contexts, it symbolizes a shorter duration within a larger temporal framework, such as the "time, times, and half a time" found in the apocalyptic literature (e.g., Daniel 7:25; Revelation 12:14).

Her Song.
vs. the "whole note":

Julia Smith Literal 1876 Translation:
And when he opened the seventh seal, there was silence in heaven about half an hour.
And when he opened the seventh seal, there was silence in heaven about half an hour.
LITV Translation:
And when He opened the seventh seal, a silence occurred in Heaven, about a half hour.
And when He opened the seventh seal, a silence occurred in Heaven, about a half hour.