Hi, According to Jean Meeus, _Mathematical Astronomy Morsels_ (1997), p. 346, the extreme values of the length of the true solar day (reckoned from meridian transit to the next meridian transit) are
26 March: 24h - 18.1 sec 19 June: 24h + 13.1 sec 16 September: 24h - 21.3 sec 22 December: 24h + 29.9 sec The above values were computed for 1998, so there may small changes in other years. rvg -----Original Message----- From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Frank Evans Sent: woensdag 14 september 2011 20:59 To: Sundial Subject: longest day Greetings, fellow dialists, I tried to astonish my grandson by telling him that this was the longest day of the year. (I think this is correct; today is 24 hours and 22 seconds long.) He replied by asking if there was a name for this day. He said he couldn't find anything on the interwebs. I am being outplayed by a grandson! Any help with a name, please? Frank 55N 1W --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
