כִּ֤י אִם־עֲוֺנֹֽתֵיכֶם֙ הָי֣וּ מַבְדִּלִ֔ים בֵּינֵכֶ֕ם לְבֵ֖ין אֱלֹֽהֵיכֶ֑ם וְחַטֹּֽאותֵיכֶ֗ם הִסְתִּ֧ירוּ פָנִ֛ים מִכֶּ֖ם מִשְּׁמֽוֹעַ׃
But your iniquities have separated Between you and your God, And your sins have hid His face from you, That He will not hear.
Siddur Ashkenaz
This prayer is customarily recited in the open air, in clear sight of the moon, seven days after the birth of the new moon.