Andrew Fribush

fig. 2.27.3: a step, Google’s noon-to-noon linear smear and Meta’s 17-hour quadratic smear across one inserted second: a full second apart just after midnight

fig. 2.27.3 · a step, Google’s noon-to-noon linear smear and Meta’s 17-hour quadratic smear across one inserted second: a full second apart just after midnight.
THREE WAYS TO TAKE THE SAME SECOND: JUST AFTER 00:00 UTC THE THREE CLOCKS SPAN AFULL SECONDONE LINE IS ONE SERVER’S CLOCK: SECONDS AHEAD OF TAI − 37 S. ACCENT: HOW FARAPART THE THREE ARE.0+.5+11 S APARTAT 00:00:01STEP: THE CLOCK REPEATS ONE SECOND AT 00:00GOOGLE: 24 H LINEAR, NOON TO NOONEACH SECOND ~11.6 μS LONGERMETA: 17 H QUADRATIC FROM 00:00STEP DROPS TO 012:00 31 DEC18:0000:00 1 JAN06:0012:0017:00UTC, NOON 31 DECEMBER TO 18:00 1 JANUARY · META’S CURVE SHAPE FROM ITS PUBLISHED GRAPH, NO FORMULA GIVEN

source: developers.google.com/time/smear (24-hour linear, noon to noon, each second about 11.6 microseconds longer) · Meta engineering, 2022-07-25 (17-hour quadratic from 00:00:00 UTC; curve shape from its offset graph) · leapSmears.data.ts

View in context: The second that was added at midnight → · All figures

Andrew Fribush, software and computer engineer in Austin. I build consequential systems where software meets institutions: finance, healthcare, commerce, government data, and the mechanisms that govern AI agents. Taking new engagements: hello@andrewfribush.com.