Date of Separation vs Date of Separation Agreement

If my husband & I separated several months ago - but only need a legal separation agreement now (in order to change our car insurance) - can we still list the original date of separation, even though the date the agreement will be notarized is months later?

We have been living apart.

Thanks in advance for your time!

Yes, if you agree on the date of separation, it may be listed as such in the separation agreement.

The date of separation is indeed the date you began living separate and apart. It is not uncommon at all for the date of the execution of an Agreement to be different than the date of separation.

Thank you for your time!

You are most welcome.