In an unsupervised estate, pursuant to DC Code, sec. 20-734, the personal representative has a duty to provide an account to the interested persons at reasonable intervals or on reasonable demand, and the personal representative may be compelled to account to the Court in a proceeding initiated by an interested person following notice and a hearing. However, because the estate is unsupervised, there is no duty to file the account with the Court unless the Court orders that an account to be filed or an estate to be converted to supervised probate. In a supervised estate, the first account is due for filing with the Court one year plus one day from the first date of publication of the Notice of Appointment, Notice to Creditors and Notice to Unknown Heirs. Subsequent accounts are due every nine months thereafter.