This site states this specific instruction directly: mark the 60-day guarantee deadline the day your order arrives, not when you remember to.
The 60-day window is described as running from your stated purchase date — worth marking that exact date immediately on delivery, rather than losing track of how much of the window has already passed.
Set a calendar reminder the same day your order arrives, noting both the purchase date and the last day you can contact the seller to request a refund within that 60-day window.
Backed by a 60-day money-back guarantee.
See The Current Quiet Nerves Offer