message: Fix date retrieval in milliseconds
diff: @@ -103,7 +103,7 @@ function calculateApplicableDiscount (basket, req) {
  } else if (req.body.couponData) {
  const couponData = Buffer.from(req.body.couponData, 'base64').toString().split('-')
  const couponCode = couponData[0]
  - const couponDate = new Date(couponData[1])
  + const couponDate = couponData[1]
  const campaign = campaigns[couponCode]
  if (campaign && couponDate === campaign.validOn) {
  if (utils.notSolved(challenges.manipulateClockChallenge)) {
  