[tz] Historical data for Iran

[Michael H Deckers]

    On 2022-05-30 23:46, Paul Eggert via tz proposed the text:


>   # ... but it is clear that standard time  in
>   # Iran started on 1935-06-13 and not 1946.

    No, the date 1935-06-13 indicated in the order is
    the date of approval of the cabinet order. It could
    take effect on the next midnight at the earliest,
    but not on the previous midnight.

    Michael Deckers.