אדושם שפָתַי תִּפְתָּח וּפִי יַגִּיד תְּהִלָּתֶךָ:
בָּרוּךְ אַתָּה ה' אֱלקֵינוּ וֵאלקֵי אֲבותֵינוּ. אֱלקֵי אַבְרָהָם. אֱלקֵי יִצְחָק. וֵאלקֵי יַעֲקב. הָאֵל הַגָּדול הַגִּבּור וְהַנּורָא אֵל עֶלְיון. גּומֵל חֲסָדִים טובִים. וְקונֵה הַכּל. וְזוכֵר חַסְדֵּי אָבות. וּמֵבִיא גואֵל לִבְנֵי בְנֵיהֶם לְמַעַן שְׁמו בְּאַהֲבָה:
מֶלֶךְ עוזֵר וּמושִׁיעַ וּמָגֵן: בָּרוּךְ אַתָּה ה', מָגֵן אַבְרָהָם:
O Lord, open my lips and my mouth will declare Your praise.
Blessed are You, Lord our God and God of our fathers, God of Abraham, God of Isaac and God of Jacob; the great, mighty and awesome God, the most high God, Who bestows loving kindness and goodness and is master/creator of all, Who remembers the good deeds of the fathers, and brings a redeemer to their children, in love and for the sake of His name.
King, Helper, Savior, and Shield. Blessed are You, O Lord, Shield of Abraham.
It was stated: Rabbi Yosei, son of Rabbi Ḥanina, said: The practice of praying three times daily is ancient, albeit not in its present form; prayers were instituted by the Patriarchs. However, Rabbi Yehoshua ben Levi said that the prayers were instituted based on the daily offerings sacrificed in the Holy Temple, and the prayers parallel the offerings, in terms of both time and characteristics.
וַיַּשְׁכֵּ֥ם אַבְרָהָ֖ם בַּבֹּ֑קֶר אֶל־הַ֨מָּק֔וֹם אֲשֶׁר־עָ֥מַד שָׁ֖ם אֶת־פְּנֵ֥י ה'׃
וַיַּעֲמֹ֣ד פִּֽ֭ינְחָס וַיְפַלֵּ֑ל וַ֝תֵּעָצַ֗ר הַמַּגֵּפָֽה׃
Phinehas stepped forth and intervened, and the plague ceased.
וַיֵּצֵ֥א יִצְחָ֛ק לָשׂ֥וּחַ בַּשָּׂדֶ֖ה לִפְנ֣וֹת עָ֑רֶב וַיִּשָּׂ֤א עֵינָיו֙ וַיַּ֔רְא וְהִנֵּ֥ה גְמַלִּ֖ים בָּאִֽים׃
תְּ֭פִלָּה לְעָנִ֣י כִֽי־יַעֲטֹ֑ף וְלִפְנֵ֥י ה' יִשְׁפֹּ֥ךְ שִׂיחֽוֹ׃
וַיִּפְגַּ֨ע בַּמָּק֜וֹם וַיָּ֤לֶן שָׁם֙ כִּי־בָ֣א הַשֶּׁ֔מֶשׁ וַיִּקַּח֙ מֵאַבְנֵ֣י הַמָּק֔וֹם וַיָּ֖שֶׂם מְרַֽאֲשֹׁתָ֑יו וַיִּשְׁכַּ֖ב בַּמָּק֥וֹם הַהֽוּא׃
וְאַתָּ֞ה אַל־תִּתְפַּלֵּ֣ל ׀ בְּעַד־הָעָ֣ם הַזֶּ֗ה וְאַל־תִּשָּׂ֧א בַעֲדָ֛ם רִנָּ֥ה וּתְפִלָּ֖ה וְאַל־תִּפְגַּע־בִּ֑י כִּי־אֵינֶ֥נִּי שֹׁמֵ֖עַ אֹתָֽךְ׃
https://en.wikipedia.org/wiki/Relative_hour_(Jewish_law)
Relative hour (Hebrew singular: shaʿah zǝmanit / שעה זמנית; plural: shaʿot - zǝmaniyot / שעות זמניות), sometimes called halachic hour, seasonal hour and variable hour, is a term used in rabbinic Jewish law that assigns 12 hours to each day and 12 hours to each night, all throughout the year.
A relative hour has no fixed radical, but changes with the length of each day - depending on summer (when the days are long and the nights are short), and on winter (when the days are short and the nights are long). Even so, in all seasons a day is always divided into 12 hours, and a night is always divided into 12 hours, which inevitably makes for a longer hour or a shorter hour. All of the hours mentioned by the Sages in either the Mishnah or Talmud, or in other rabbinic writings, refer strictly to relative hours.
Another feature of this ancient practice is that, unlike the standard modern 12-hour clock that assigns 12 o'clock pm for noon time, in the ancient Jewish tradition noon time was always the sixth hour of the day, whereas the first hour began with the break of dawn, by most exponents of Jewish law, and with sunrise by the Vilna Gaon and Rabbi Hai Gaon. 12:o'clock am (midnight) was also the sixth hour of the night, whereas the first hour of the night began when the first three stars appeared in the night sky.