Alleged Chemical Attack Khan Sheikhoun 4 April 2017/Timeline

Hospitals
8:12 - First mention of chemical attack in Whatsup group used by doctors in the area.

8:30 - ("closer to") Dr. Islam claims to start receiving patients at his clinic 60 km and 45 minutes drive away from Khan Sheikhoun.

9:29 - First casualties reported at Jarjanaz clinic.

Other sources

 * WIP Timeline of Khan Sheikhoun Events Presented By OPCW, HRW and Other Witness Testimony - Andrew