на дату окончания(The competition is open to students (in categories between the ages of 5 and 19 years of age as at the closing date of the competition) of any school in the ... | Applicants must, as at the closing date for receipt of applications, have a third level qualification in a relevant subject such as: Community ... Alexander Demidov)
на последнюю отчётную дату(Provide a statement, as at the last reporting date, of any contingent liability or loss (where not otherwise reported) that would require disclosure in ... Alexander Demidov)
по прошествии некоторого времени(It is an object of this invention to provide a closure plug that can be extracted at a later date from the component to which it is fitted. I. Havkin)
с момента(Если не брать во внимание вариант перевода "upon", то обычно наш "момент" в английском языке становится "датой" ("from the date"). Однако, если необходимо сделать акцент имеено на "моменте", можно воспользоваться этим вариантом, встретившимся мне в новозеландской справке:: This certificate ... is immediately valid and effective as at the date and time the seal was affixed4uzhoj)