The footnote in my NIV Study Bible (commenting on the above verse:- "The Jews replied, 'It has taken 46 years to build this temple, and you are going to raise it in 3 days'") states that 'the date of the event mentioned here is AD 26'.
Surely this is wrong, as according to Josephus the rebuilding work ordered by Herod began no earlier than 19 BC and there was no 'year zero'. Adding 46 years, we arrive at a date of AD 28 - counting inclusively, no earlier than AD 27.
The incident John refers to comes right at the start of Christ's ministry, immediately after his first miracle at Cana. Your timeline for the Life of Jesus shows AD 27 as the first year of his ministry and (assuming a total ministry 3-and-a-half years) AD 31 for the Crucifixion. This is an error/contradiction that may be readily corrected, leading to a more realistic date for the Crucifixion of AD 32 or 33, favoured by most scholars.