Sunny, short for...

[Algor1thm]

(For a girl)

I like Sunday but not sure I can quite get DH there, he's not quite as brave as me. I've had a search, and not keen on suggestions of Soleil or Marisol as we're British, and it seems a little pretentious to me without European connections. Connections by meaning alone (e.g. saw Aurelia suggested because it means golden) are a bit of a stretch for us... it would need to have related sounds in it.

Any suggestions?

Sonia, Selina

Honestly I think as long as you choose a name beginning with s you could use sunny.

Sarah
Susie/Susan
Sally

Susanna
Savannah (which is a hot, sunny place)
Sienna
Summer is also more of a 'proper name' than sunny so might be more acceptable for your husband?

This is the most logical

or Susannah - which is a more workable first name in the UK

I don’t mind Sunday myself. But not Summer or Sunshine (or Sunflower) - once hippy names, but now downmarket. Also she might not appreciate the pressure to be sunny when she grows up, the only Joy I met loathed her name and was anything but joyous

It doesn't make sense as a nickname for something that just means "sunny" or "golden" like Aurelia. Most people will not get the connection.

Sunniva is pretty and an old Scandinavian name.

Sunita is pretty too.

This may be a tiny bit of a stretch but still workable, in my opinion:

Sonia

I do think personally that if you choose names like Summer, Sunday etc then it needs to be connected.
So I think Sunday should be born on Sunday?
Summer is not a December birthday?

and so on.

Soleil (French for sun)