You may choose to tell them once you're feeling better, because then you could better handle a negative reaction to your announcement. (relevantmagazine.com)
The market did not initially show any adverse reaction to this announcement. (canadianmortgageadvisor.ca)
Options expiring outside that grey area should experience little to no price change in reaction to the announcement of the date - unless the date was itself surprising, e.g. an earlier date would increase the premium on earlier dated options, a later date would increase the premium for later - dated options. (money.stackexchange.com)