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Tracking iCal feed latency across O365/Google/Apple

Tracking iCal feed latency across O365/Google/Apple

by turkeywelder·Jun 19, 2026·2 points·0 comments
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AI Analysis

●●SolidDark HorseNiche Gem

Nobody else measures calendar sync latency at this scale with real production data.

Strengths
  • •Unique dataset from 1M+ feeds monthly that no other service can replicate.
  • •Answers a real question about sync reliability that's previously unmeasurable.
  • •Clean presentation with live rankings and 14-day trend comparisons.
Weaknesses
  • •Observational dashboard only—doesn't solve the latency problem itself.
  • •Data limited to Timetastic user base, introducing potential selection bias.
Category
Productivity
Target Audience

Teams managing calendar integrations, IT admins troubleshooting sync issues

Post Description

We track a lot of iCal feeds at Timetastic[0] and I thought it'd be interesting to see if we could identify when Google or Outlook's iCal feed fetchers were down or slow because the latency can vary wildly from a few hours to days.

We already log the timestamps and user agents for the feed checkins and we've got a rolling month's worth of data so this seemed like a nice little exercise I could do in the evening.

[0] Nearly 3 million per month. People like iCal a lot!

Full disclosure - I work at Timetastic, but I did make this on my own in my own time

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