Timestamps

Communication between the Kumo Cloud and MHK2 units will include certain timestamps spanned over four bytes. Mitsubishi encodes these in a bitfield in form YYYYYY mmmm DDDDD HHHHH MMMMMM SSSSSS. In the below chart, but 1 is the rightmost.

Bits	Purpose
1-6	Second (0-59)
7-12	Minute (0-59)
13-17	Hour (0-23)
18-22	Day of Month (1-31)
23-26	Month (1-12)
27-32	Year (since 2017)

Conversions can be done with the following code:

def convert_date_time(dt):
    return (dt.year - 2017) << 26 | \
           (dt.month << 22) | \
           (dt.day << 17) | \
           (dt.hour << 12) | \
           (dt.minute << 6) | \
           (dt.second)

def from_magic(magic):
    seconds = magic & 63
    minutes = (magic >> 6) & 63
    hours = (magic >> 12) & 31
    days = (magic >> 17) & 31
    months = (magic >> 22) & 15
    years = (magic >> 26) + 2017
    return datetime.datetime(years, months, days, hours, minutes, seconds)