Translation of "mujur" into English

Tapi karena kesalahan yang mujur, aku sampai di Kementerian 3 jam lebih awal.

But by a happy mistake, I arrived at the Ministry three hours early.

Jika kalian mujur, di jendela itu suatu hari nanti akan muncul sosok seorang musuh.

If you are lucky, in that window will one day emerge the figure of the enemy.

Kita akhirnya mendapat kemujuran, kenapa kita tidak bisa menikmatinya?

We' re finally having some good luck, why can' t we enjoy it?