From Investopedia we have the definition of a loan origination:
Origination is the multi-step process that every individual must go through to obtain a mortgage or home loan. The term also applies to other types of amortized personal loans. Origination is often a lengthy process and it's overseen by the Federal Deposit Insurance Corporation (FDIC) for compliance with Title XIV of the Dodd-Frank Wall Street Reform and Consumer Protection Act.
However, I would like to know what is the loan origination date. Given that the origination is a lengthy process, what does one usually mean by its date? Is it the start of the process, the date the money appears on your account, or something else?