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Leap Second 2015
Real-time stream of how we are using our extra second today
verified Jul 11, 2026 · HTTP 200
CohortClass of 2015What it is
Real-time stream of how we are using our extra second today. [Tech]
HTTP liveness
9 probes since Jun 16Jun 16Jul 11
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jul 4, 2026Back onlineAlive · 200 OK
- Jun 16, 2026First probe — unverifiedUnknown
Discussion 0 comments
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Pulse Indexobserved activity
9 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2015weekly
12,940 products launched in 2015 · 100% still active
12,899 active41 sunset
Still active
100%
Median lifespan
4.9y