Questions relate to the Hour are found a lot in the Holy Qur’an: For example:

﴾ يَسْأَلُونَكَ عَنِ السَّاعَةِ أَيَّانَ مُرْسَاهَا ۖ قُلْ إِنَّمَا عِلْمُهَا عِندَ رَبِّي ۖ لَا يُجَلِّيهَا لِوَقْتِهَا إِلَّا هُوَ ۚ ثَقُلَتْ فِي السَّمَاوَاتِ وَالْأَرْضِ ۚ لَا تَأْتِيكُمْ إِلَّا بَغْتَةً ۗ يَسْأَلُونَكَ كَأَنَّكَ حَفِيٌّ عَنْهَا ۖ قُلْ إِنَّمَا عِلْمُهَا عِندَ اللَّهِ وَلَٰكِنَّ أَكْثَرَ النَّاسِ لَا يَعْلَمُونَ ﴿

(They ask you, [O Muhammad], about the Hour: when is its arrival? Say, “Its knowledge is only with my Lord. None will reveal its time except Him. It lays heavily upon the heavens and the earth. It will not come upon you except unexpectedly.” They ask you as if you are familiar with it. Say, “Its knowledge is only with Allah, but most of the people do not know.”) (Al-A’raf: 187)

يسألونك (They ask you): The verb is in the present tense. That is this question is repeated and on-going.

مرساها (its arrival): The time when it will happen.