How Do I Convert Evernote Date/Time Using JavaScript?

Question

The Evernote API and local SQLite database use a unusual format/type for date/time. I have C# functions that do the conversion, but I need the same functions in JavaScript.

I need two conversion functions:
1. Convert Evernote Date/Time TO JavaScript Date/Time.
2. Convert JavaScript Date/Time TO Evernote Date/Time

Can anyone help? I know nothing about C#. I have searched here and the Evernote forums, but could not find a solution.

This is NOT an exact duplicate of the indicated question:
"I am storing time in a MySQL database as a Unix timestamp and that gets sent to some JavaScript code. How would I get just the time out of it?"

for these reasons:
1. I'm asking for conversion in both directions, whereas the other question is asking for only one way.
2. I'm dealing with SQLite whereas the other question is dealing with MySQL

public DateTime ConvertEvernoteDateToDateTime(long evDate)
        {
            // convert from seconds to ticks
            TimeSpan ts = new TimeSpan((evDate * 10000));
            // create a date with the standard web base of 01/01/1970
            // add the timespan difference
            DateTime date = new DateTime(1970, 1, 1).Add(ts);
            // adjust for the current timezone
            ts = TimeZone.CurrentTimeZone.GetUtcOffset(date);
            date = date.Add(ts);

            return date;
        }

        public long ConvertDateTimeToEvernoteDate(DateTime date)
        {
            // adjust for the current timezone
            date = date.ToUniversalTime();
            // get the ticks as a base for the standard web base date
            long baseOffset = new DateTime(1970, 1, 1).Ticks;
            // get the difference between the base and our date
            long evDate = date.Ticks - baseOffset;
            // convert from ticks to seconds
            evDate = evDate / 10000;

            return evDate;
        }

That sounds like standard UNIX time. – SLaks Jun 01 '16 at 21:32 — SLaks, Jun 01 '16 at 21:32

score 0 · Answer 1 · answered Jun 01 '16 at 21:35

0

That's regular UNIX time (seconds since 1970-01-01, UTC).

Javascript dates store milliseconds since that same origin, so you can simply multiply by 1,000, then pass that number to new Date().

answered Jun 01 '16 at 21:35

SLaks

868,454
176
1,908
1,964

If you can provide a formula or function for conversion both ways, then I'll select your answer. – JMichaelTX Jun 01 '16 at 22:19

How Do I Convert Evernote Date/Time Using JavaScript?

1 Answers1