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Even though you can't pinpoint the date, you should be able to see:
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3 q9 S5 \, i+ c8 b5 q& @) Z0 G% C公仔箱論壇"危險時間在5月8日為中心，誤差前後十天。" in 黄山松's  #5 post
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8 r$ F, L1 _9 |- `* q5 Lalso in that same #5 post, please note
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; F8 e+ u( Q" h' I"軍工、研究所、政府部門等接到預報，秘密防震."tvb now,tvbnow,bttvb4 z& ~. C# U4 I  q2 e7 d* k

) x; ~. x7 x& L! q公仔箱論壇公仔箱論壇+ I- `- P/ x, W7 O4 F
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% `' F* J6 N5 d( I6 v1 htvb now,tvbnow,bttvbYou can't pinpoint the date even in the common case of typhoon landing, but you know it is coming (yes sometimes the typhoon turns and nothing serious happens ).....but what should the  government do if ' l* h+ J$ s# T! G5 C7 S+ r( [1 R
there is a typhoon warning?