[tz] Dealing with Pre-1970 Data

David Patte ₯ dpatte at relativedata.com
Sat Aug 31 14:20:44 UTC 2013

LMT at any longitude is a simple offset calculation from GMT. LMT = GMT 
+ Longitude (as HMS)

But Local Apparent Time (Sundial Time) is a far more complex formula 
based on the date in question and other factors.

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