Narita Express - 14 day period

Hi, I'm just wondering whether the 14 day validity period for the Narita Express pass counts from the time of purchase or from the date. Does the date of purchase count as one of the 14 days?

Eg we are arriving on a Tuesday night, and leaving the Tuesday night two weeks later. Technically this is a 15 day period but if I buy the pass the Tuesday night, it should be valid until the time of purchase two weeks later?

All passes in Japan are based on calendar days, not times. So From Thursday to Thursday would be 15 days and thus not valid.

I can recall someone on this forum saying that the day you buy the N'EX round-trip ticket actually counts as "Day 0", which makes it possible to make the return trip on the same day of the week, 2 weeks later.

However, I have no way of confirming this.

From what can be seen on Google images, no, the first day is day 1.

Whatever day or time, that is day one. (eg if you purchase at 11pm, your first day is only one hour)

Thanks for the answers everyone