Webinar clock time check

It reads a CSV schedule of sessions, converts each start time into the time zones your audience is in, and lists items to compare with the invitations: labels on your own list, clock times that do not exist or happen twice on a clock-change day, sessions whose local time or local date shifts for one zone, and starts at odd hours. It never changes your file.

Your file stays in your browser. This page checks a schedule of sessions saved as a CSV file. It runs in your browser and never uploads your file. Use made-up data until your organization decides who may see real sessions.

The odd-hours window, the list of labels to flag, the table of zone abbreviations and the usual-time rule are this tool's own settings, not standards. The page uses the time zone data in your browser, so it cannot know a rule change published after that data was built; confirm a doubtful zone against an official source. The sample file is made up for teaching.

Settings you can change
Names like America/New_York
Your own list, matched against the label column
24-hour clock, for example 07:00
24-hour clock, for example 21:00
Your schedule The first row must hold these columns: session_id, series, title, date (YYYY-MM-DD), start (HH:MM in the host zone), host_zone (a name like America/New_York), label.

Notes