Thinking again about "solar pause" dynamics, It may be best to be in a high alt open field when the shock-wave hits. And pray your not facing the sun... I doubt few man made or even natural structures would survive intact...

So when day turns to smoldering night, gather your survival equip. warn those who'll listen, get to very high ground and be near a strong stucture just in case...

It may be best to be sheltered when re-ignition flashes, and in the open field when the shock-wave arrives a few hours later...islands and mountains removed from their places and all that....gonna be a ride!!!