<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On 26 Oct 2017, at 17:45, Chris Barker <<a href="mailto:chris.barker@noaa.gov" class="">chris.barker@noaa.gov</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">This is a key point that I hope is obvious:</div><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">If an ISO string has NO offset or timezone indicator, then a naive datetime should be created.</div><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">(I say, I "hope" it's obvious, because the numpy datetime64 implementation initially (and for years) would apply the machine local timezone to a bare iso string -- which was a f-ing nightmare!)</div></div></blockquote></div><div class=""><br class=""></div><div class="">I hope the other obvious thing is that if there is a offset then a datetime that is *not* naive can be created</div><div class="">as it describes an unambiguous point in time. We just cannot know what political timezone to choose.</div><div class="">I'd guess that it should use the UTC timezone in that case.</div><div class=""><br class=""></div><div class="">Barry</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div></body></html>