Downloaded PDF file's file name contains '-' instead of ':'

Hi Experts,

I am trying to download a file with fileame as QUOTATION_XXXXX_DD-MM-YYYY_HH:MM:SS.pdf where XXXXX is Document id,

but it was downloading as QUOTATION_XXXXX_DD-MM-YYYY_HH-MM-SS.pdf.

Is there any Restrictions are there to File names to be downloaded from Http Response Object?

Thanks & Regards

Vijay