Time zone confusion and implementation hints

[Tony Finch]

On Fri, 2 Jul 2010, Yves Goergen wrote:
>
> A (binary searchable) table implies a flat two-dimensional structure.
> Zones and rules are more than two-dimensional. At the point when I
> resolve zones and rules into a linear table, I think I lose the
> efficient storage and need to write out the transition times for all
> years separately, which will be huge.

You can fit a table entry into four bytes, so for two transitions each
year between 1970 and 2038 (136 entries) you need just over half a
kilobyte.

Tony.
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