Following are a number of back-translations of Revelation 8:12:

• Uma: “The fourth angel blew his trumpet, suddenly there was something that hid one third of the sun, moon and stars, with the result that one third of their shining no longer shone. So there were times that the sun did not shine during the day. So also at night, there were times the moon and stars did not shine.” (Source: Uma Back Translation)
• Yakan: “Then the fourth angel blew (the thing) like a tabuli’ that had been given to him. When he blew it, immediately one part of the sun and of the moon and of the stars became dark. Two parts did not. Therefore in one day it was dark in the world for four hours and also at night for four hours the moon and the stars did not give light.” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “Then the fourth angel blew his trumpet. A third part of the sun was struck, and a third part of the moon, and a third part of the stars. Because of this the shining of a third part of the stars was taken away, and for a third part of the time each day it was very dark. And it was the same way for a third part of the time of every night.” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “After-that the fourth angel also blew-his-horn, and a third of the sun, moon and stars were struck so that a third of their light ceased. Therefore it-was-dark a third of the day and a third of the night.” (Source: Kankanaey Back Translation)
• Tagbanwa: “When the fourth angel also blew his horn, the third part of the sun, moon and stars was struck. That’s why a third part of their light disappeared. The third part of daytime became dark and also nothing gave light for the third part of night-time.” (Source: Tagbanwa Back Translation)
• Tenango Otomi: “The fourth angel blew the trumpet. A part of the sun became dark then, but it didn’t come to half of the sun that darkened. Like this was darkened part of the moon. And there was darkened part of the stars. In the daytime four hours were in darkness upon earth. In the nighttime four hours didn’t have even any stars show.” (Source: Tenango Otomi Back Translation)