Examples of using It is not known when in English and their translations into Polish
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Colloquial
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Official
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Medicine
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Ecclesiastic
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Ecclesiastic
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Financial
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Official/political
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Programming
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Computer
It is not known when did Laakapu die.
He died while still at Jiang Prefecture, but it is not known when that occurred.
It is not known when Kamiizumi died.
But you need to prepare for his appearance in advance, because it is not known when he decides to come into the world.
It is not known when Jones died.
It is not known when she was born.
Of course, it is not known when the work will end.
It is not known when it was performed.
It is not known when he became a novice monk.
It is not known when they arrived in Hong Kong.
It is not known when it will reopen.
It is not known when the Sphinx appeared.
It is not known when will the next eruption.
It is not known when he retired from that position.
It is not known when or where he was born.
It is not known when or how she came to Córdoba.
It is not known when he joined the Teutonic Order.
It is not known when the castle was abandoned.
It is not known when Zhao Deyin was born.
It is not known when Lowicz received town charter.
It is not known when exactly it was constructed.
It is not known when the cottage was demolished.
It is not known when the tax was formally abolished.
It is not known when, or why, that was removed.
It is not known when and how it expired.
It is not known when it entered service.
It is not known when the first native people arrived in the Pomquet area.
It is not known when Onold took over the rule in the Włocławek diocese.
It is not known when the service will be re-established.