sent emails through Friday

[Maybo]

The Japanese Embassy in Israel sent emails through Friday to Japanese nationals in Israel about South Korea's offer to transport them if there were vacancies.

Source: https://www3.nhk.or.jp/nhkworld/en/news/20231014_13/ S.Korean military jet leaves Israel bringing its citizens, foreigners home


Why was "through" used, and not "on"?

 

[Tarheel]

They started before Friday and ended then.

 

[Piscean]

It's not natural in BrE.

 

[Maybo]

They started before Friday and ended then.

Does that mean they kept sending emails on Friday?

 

[emsr2d2]

I would take it to mean that they sent several emails across the course of the day on Friday. As Piscean said, though, it's not natural in BrE.

 

[Rover_KE]

Why was "through" used, and not "on"?

This meaning of 'through' is the American English more succinct version of how British English speakers usually say 'up to and including'.

For example 'I'll be on vacation from October 21 through 28' means I'll be back on October 29.

 

[jutfrank]

It sounds wrong to me. How are we meant to know when the emails started to be sent?

Are we saying this is American usage? I've never heard it before.

 

[emsr2d2]

This meaning of 'through' is the American English more succinct version of how British English speakers usually say 'up to and including'.

For example 'I'll be on vacation from October 21 through 28' means I'll be back on October 29.

I'm familiar with that usage but, as jutfrank just pointed out, there's no starting point in the original. It's unclear - that's why I could only say "I would take it to mean ..." rather than "It means ...".
The possible interpretations are:
1. They started sending emails at an unspecified point before Friday and finished sending them at the end of Friday.
2. They sent emails throughout the day on Friday (but not before Friday).

 

[Tarheel]

I think I would have said "on Friday" meaning they sent them that day at no specified time (if that's what they meant). In other words, we don't know when they were sent or how many or at what times. We just know what day they were sent.

 

[Rover_KE]

Why was "through" used, and not "on"?

I take it to mean 'throughout' or as emsr2d2 said in post #5.