Yesterday’s solution.

ACROSS: 1 Geomagnetic. 5 After. 7 Muffs. 9 Lead-ins. 11 Nod. 12 Tun. 13 On board. 16 Infer. 17 Say-so. 18 Hiding place. DOWN: 1 Go along with. 2 Aorta. 3 Nimbi. 4 Casting vote. 6 Told off. 8 Fast day. 10 Duo. 14 Baron. 15 Aesop.