In an undated handout image, an advisory at Cape Town International Airport warns travelers about the South African city’s ongoing water crisis. Based on consumption and expected rainfall, Cape Town’s “Day Zero” — when taps will be turned off and water distributed only by allotment — is projected to be April 29, 2018. (Lisa Scriven via The New York Times) -- NO SALES; FOR EDITORIAL USE ONLY WITH STORY SLUGGED CAPE TOWN WATER ADV07 BY KHAN FOR JAN. 7, 2018. ALL OTHER USE PROHIBITED. --.