رَبُّ ٱلْمَشْرِقَيْنِ وَرَبُّ ٱلْمَغْرِبَيْنِ
Asad Quran Translation
[He is] the Sustainer of the two farthest points of sunrise, and the Sustainer of the two farthest points of sunset.7
I.e., of the extreme points of sunrise and sunset in summer and in winter (see 37:5 and 70:40 ), including "all that is between them": a metonym for God's being the Ultimate Cause of the orbital movement within the universe.
Malik Quran Translation
and there shall wait on them the eternal youths
He is the Rabb of the two easts and the Rabb of the two wests.
Yusuf Ali Quran Translation
(He is) Lord of the two Easts and Lord of the two Wests: 5184
The two Easts are the two extreme points where the sun rises during the year, and includes all the points between. Similarly the two Wests include the two extreme points of the sun's setting and all the points between. The Dual Number fits with the general atmosphere of Duality in this Sura. Allah is Lord of every region of the earth and sky, and He scatters His bounties everywhere. See also n. 4641 to xliii. 38, and n. 4034 to xxxvii. 5.
Mustafa Khattab Quran Translation
˹He is˺ Lord of the two easts and the two wests.1
The two points of sunrise and sunset in the summer and the winter.
Piktal Quran Translation
Lord of the two Easts, and Lord of the two Wests!
Rabbu almashriqayni warabbu almaghribayni