When expressing "a quarter to xxx" (e.g. 1:45 PM) one can use "dodrans", but there seems to be no exact agreement as to how to do so properly.
Traupman gives on page 81 of his Conversational Latin for Oral Proficiency the following example:
Traupman wrote:Est prima hora et dodrans. -- It is 1:45
I found a Spanish/Latin-slideshow where a different use is shown:
Jesús León Vaquero wrote:1:45 -- Est (hora) secunda et dodrans = cum dodrante ...