holidays?country=US&types=public&year=2026

List the official holidays for a country and year, with exact observed dates including substitute days (e.g.

List the official holidays for a country and year, with exact observed dates including substitute days (e.g. a Saturday July 4th observed on Friday). Query: country (ISO 3166-1 alpha-2, 200+ supported), year, optional region (subdivision code like CA for US-California or BY for DE-Bavaria), optional types filter (public, bank, school, optional, observance — comma-separated), optional lang (ISO 639-1) for localized names. Returns one item per holiday: { date (YYYY-MM-DD), name, type, substitute, rule }. Dates are computed from maintained per-country rules — including movable feasts and lunar-calendar holidays — so they stay correct year over year. Use for scheduling, delivery estimates, payment terms, and SLA math.

UNRATEDListed

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.0025 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x2b6d4988…51fc32c5

URL

https://2s.io/api/calendar/holidays?country=US&types=public&year=2026

Seen

first 34 days ago · last 9 hr ago

65 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC, Solana

Listed on?

Base, Solana

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.735 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by latency p95 · gap to 1.000 is 0.265: 0.065 uncertain ? + 0.200 short ? · 0.065 to B

How the composite of 0.735 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
latency p95costs the most it answered as fast as its class	0.20	0.00	0.000		0.000	−0.200	0
liveness it answered at all	0.60	1.00	0.892		0.535	0	−0.065
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.735	gap to 1.000 = 0.265 · 0.200 short · 0.065 uncertain	0.735	−0.200	−0.065

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out

  0.200 × 0.000   latency p95    
+ 0.600 × 0.892   liveness       
+ 0.200 × 1.000   price stability
= 0.735           → UNRATED: 57 of 30 paid calls      weights 2026.09.6 · 57 samples · seed cap_01M1A59KCHJV5B5B9P0GT70N1V|2026-09-03T16:29:31.861Z|2026.09.6

Verify it yourselfnpx teppi-check https://2s.io/api/calendar/holidays?country=US&types=public&year=2026curl -s https://api.teppi.xyz/v1/trust/cap_01M1A59KCHJV5B5B9P0GT70N1V