When is VMBU updated?

[#1]

How frequently is monthly usage updated on the VMBU page and when does it rollover relative to billing date?
Thanks.

[#2]

that update is not consistent ,but probably about 2 - 3 hours
the end of month about 8 in the morning,  the previous total is only available

[#3]

When working properly, the data is updated every hour, on the hour, about 1 hour behind real-time.
That means, when my peak hours start at 4PM (see my signature for package details), I get the first addition to peak usage at 6PM, including the data for the period between 4PM and 5PM.
I'm not sure when the data zeros at month-end, but I think it is around 2AM on the billing date.

[#4]

Thank you for the replies.