jaybo / deepzoom-blog

Public repository for DeepZoom
0 stars 0 forks source link

Tide graph line is offset by one hour for November 2020 for East and Central time zones #1

Closed jaybo closed 1 year ago

jaybo commented 3 years ago
  1. Only happens to stations located in east and central time zones. I’ve never seen it before since I’m in the Pacific time zone.
  2. The tick mark times and tide tables times appear to be correct. Only the graphed line function is offset by one hour for the entire month.
  3. Doesn’t seem to happen in any year except 2020, which I believe is due to the time change happening on November 1st for this year.
    (The data set for a station is provided in monthly chunks).
  4. So the tide data is correct, but the line graphing function has a bug. image
jaybo commented 1 year ago

Fixed in V2.7.19.
This was such a weird bug. It only happened when DST fall change happened on the first day of the month, i.e. Nov 2020, 2026, ...