Best time to submit meter readings ?

Hi
Does anyone know how long it takes to process a meter reading I provide. Last couple of months I’ve had estimated month end readings by bulb. Me Submitting a reading is not a prob but wanted to know when best to do it to get accurate bills from bulb. Would submitting a reading say the 26th of each month be too late for them to do this ?

It wasn’t always the case, due to a technical issue with gas readings, but currently two days before the billing date is working for me.

It wasn't always the case, due to a technical issue with gas readings, but currently two days before the billing date is working for me.

Thank you.

@Pap your account is aligned to the 1st of each month, so readings at end of month are best.

Thankyou