It is my understanding that for these types of reasons (and others), folks who are adhering to Ramadan can eat while traveling and if they are sick. And agreed to previous point that the southern hemisphere may have been less impacting in this particular case (given overlap during IETF in northern hemisphere In summer). That said, moving the meeting further south would have helped as well vs. How far north Vancouver is. Victor K Sent from my iPad On 2012-07-22, at 2:36 AM, Yaakov Stein <yaakov_s@xxxxxxx> wrote: > >> By cutting the sunrise-to-sunset fasting period of the day to a much shorter period. > > Actually, the first day of this IETF (and the last of IETF54) were very interesting > for those fasting on the 9th of Av fast day and having to travel westwards. > > Flying west during the fast increases its duration, > for example from Jerusalem to Vancouver there is a 10 hour time zone difference, > so instead of 25 hours the fast increases to 35 hours without food or water. > > Y(J)S >