Discover / calendar-systems.x402tookit.com

Calendar Systems

■ Challenge detected

Convert a Gregorian date to the Hebrew calendar (or back) with leap year, year type and major holiday dates.

Listed price
$0.02
Challenge detected
1 of the last check
Median response
178 ms
Last checked
21 Oct, 00:26 UTC
In our index since
21 Oct 2026

Endpoint

curl -i https://calendar-systems.x402tookit.com/hebrew-calendar
# 402 Payment Required: pay with an x402 client (USDC on Arbitrum),
# then send the same request again with the payment attached.
9 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://calendar-systems.x402tookit.com

  • GET/leap-yearNo price listedIs a year a leap year in the Gregorian, Julian, Hebrew, Islamic (tabular) or Persian calendar? Rule and nearby leap years.
  • GET/moon-phaseNo price listedMoon phase name, age in days, approximate illumination and the previous/next new, quarter and full moon times for a date.
  • GET/persian-calendarNo price listedConvert a Gregorian date to the Persian Solar Hijri calendar (or back) using the astronomical Nowruz rule, 1901-2100.
  • GET/moon-calendarNo price listedAll new moons, first quarters, full moons and last quarters in a month (UTC) with times and a blue-moon flag.
  • GET/islamic-calendarNo price listedConvert a Gregorian date to the Islamic tabular civil calendar (or back); a calculated approximation, not moon sighting.
  • GET/seasonsNo price listedMarch and September equinox and June and December solstice moments (UTC) for a year, with season lengths in days.
  • GET/julian-dayNo price listedJulian Day, modified JD and Julian Day Number for a date and UTC time (Gregorian or Julian calendar), or JD back to a date.
  • GET/julian-calendarNo price listedConvert between Gregorian and Julian calendar dates (Old Style / New Style) with the day difference for that date.
  • GET/hebrew-calendarNo price listedConvert a Gregorian date to the Hebrew calendar (or back) with leap year, year type and major holiday dates.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 9 of 9 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/calendar-systems.x402tookit.com

Recent checks

21 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.21 Oct 2026
All 1 checks
When (UTC)ResultHTTPResponse
21 Oct, 00:26 UTCChallenge detected402178ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 21 Oct, 00:26 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for Calendar Systems?

Its listed price is $0.02.

What payment terms does Calendar Systems advertise?

The listing advertises x402, Arbitrum, Base, Polygon, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is Calendar Systems listed?

In x402 Bazaar. Superstables first indexed it on 21 Oct 2026.

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