[Options Expiry if Markets are Shutdown]

From what I can gather it's a moot point as it isn't gonna happen anyway, but nevertheless it would be useful to know what the procedure is.

Hermatite

[Options Expiry if Markets are Shutdown]

Due to recent volatility, there are calls for, and some speculation that trading could be halted due to the markets being shutdown. If the market is closed for a week or so, and this covers a period of options expiry, what is the procedure for determining the expiry price of In The Money options?

Thanks!