Why three days works well
Fallout radiation drops very quickly (the classic 7-10 rule of thumb):
β’ 1 hour after the explosion: reference level (100%)
β’ ~7 hours: ~10%
β’ ~2 days (~49 hours): ~1%
β’ ~3 days (72 hours): further reduced (often on the order of 0.5β0.6% of the 1-hour rate in standard decay tables)
By the 48β72 hour mark, the most intense early fallout has largely decayed.
@Maks_NAFO_FELLA WTF, he was having a go at European leaders for buying ruzzian oil and gas before, and now this.
Follow the money and youβll have your answer.