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GitHub Git handshake disruption on 29 September 2026

GitHub Git handshake from Mumbai, Singapore, Tokyo: degraded checks; 2026-09-29 14:00 UTC to 2026-09-29 16:00 UTC: peak Git handshake 1.28 s vs a usual 0.7 s.

What our checks saw
Degraded
Cities affected
Mumbai, Singapore, Tokyo
When
to
How long
2 hours
Slowest check
1.28 s, usually 696 ms
GitHub's status page
Open it

Where our checks saw it

Each glowing city had slow or failing checks during the incident, shown at its worst. We test from 6 cities, so other places may have been hit too.

Our checks, city by city

Each point is one check every 30 minutes, from three hours before the incident to three hours after. Coloured points are the checks we counted as slower or failing. The shaded area shows how far above the usual time they were. Not affected: Amsterdam, San Francisco, Montreal.

Singapore

Incident0 ms1.00 s2.00 s11:0014:0017:00
Each check (UTC)Usual (696 ms)Slower than usualSlow check outside the incidentIncident
Every check as a table
Time (UTC)CheckReading
11:00743 msNormal
11:30707 msNormal
12:00726 msNormal
12:30731 msNormal
13:00713 msNormal
13:30880 msNormal
14:001.68 sSlower than usual
14:30689 msNormal
15:00818 msNormal
15:30736 msNormal
16:00732 msNormal
16:30722 msNormal
17:00701 msNormal
17:30715 msNo check
18:00745 msNo check
18:30688 msNormal
19:001.25 sSlower than usual

Tokyo

Incident0 ms500 ms1.00 s11:0014:0017:00
Each check (UTC)Usual (181 ms)Much slower, or failingSlow check outside the incidentIncident
Every check as a table
Time (UTC)CheckReading
11:00191 msNormal
11:30194 msNormal
12:00197 msNormal
12:30175 msNormal
13:00266 msNormal
13:30316 msNormal
14:00861 msMuch slower, or failing
14:30182 msNormal
15:00204 msNormal
15:30193 msNormal
16:00186 msNormal
16:30184 msNormal
17:00192 msNormal
17:30180 msNo check
18:00182 msNo check
18:30188 msNormal
19:00476 msMuch slower, or failing

Mumbai

Incident0 ms750 ms1.50 s11:0014:0017:00
Each check (UTC)Usual (272 ms)Much slower, or failingSlow check outside the incidentIncident
Every check as a table
Time (UTC)CheckReading
11:00296 msNormal
11:30277 msNormal
12:00656 msSlower than usual
12:30265 msNormal
13:00426 msNormal
13:30400 msNormal
14:001.16 sMuch slower, or failing
14:30269 msNormal
15:00284 msNormal
15:30264 msNormal
16:00314 msNormal
16:30290 msNormal
17:00301 msNormal
17:30275 msNo check
18:00265 msNo check
18:30276 msNormal
19:00979 msMuch slower, or failing

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