Event Calendar
What resolves when, across the markets people are actually trading.
The tool runs at /calendar and needs a $49.99/mo membership. There is no free tier and no trial, so opening it signed out lands on the pricing page rather than the board. This page is the open documentation of what it does.
Settlement is the moment a market pays out and an edge stops existing. Traders work backwards from those clocks — when to take profit, when a hedge stops being available, when a thin book gets thinner. The Event Calendar puts both venues' upcoming settlements on one timeline.
The default window is fourteen days ahead, rows are sorted by settlement time with a live countdown each, and times are shown in your own timezone.
How the Polymarket half is built
Polymarket markets carry a close date directly, so the calendar takes the most actively traded open markets, keeps those whose close date parses and falls inside the window, and lists them with their current price and daily volume.
Because that selection is volume-ranked, the calendar's Polymarket half is a list of settlements that matter to a lot of people, not an exhaustive index of everything closing this fortnight.
Why the Kalshi half is built from the tape
Kalshi's raw market catalog cannot produce a usable settlement board. Probed directly it reads as a forty-thousand-plus row haystack whose opening pages are entirely auto-generated multi-variant parlay legs — forty pages deep held about two markets with any daily volume at all.
So the calendar reads the trade tape instead. Recent trades name the series people are actually trading; those series are ranked by notional, expanded to their open markets, and filtered to the window. It is a different construction from the Polymarket half, and it is the honest one for this venue.
One row per event
A Kalshi strike ladder — thirty Bitcoin levels, every spread line on a game — settles as one moment. Listing every rung would drown the board, so each event is represented by its highest-volume market and untraded rungs are dropped entirely.
The per-venue row cap is also separate rather than shared, because Polymarket's daily volumes dwarf Kalshi's and a joint cap would squeeze Kalshi off the board completely.
What the countdown is actually counting to
It counts to the venue's stated close time for that market. Close is when trading stops; resolution and payout can follow later, particularly where an outcome is disputed or the settling source publishes on its own schedule.
A row that reaches zero shows as settling rather than disappearing, because the interesting few minutes are the ones around the clock running out.
What it cannot tell you
Every tool has a boundary, and knowing where it sits is the difference between using one well and being misled by it. For Event Calendar:
- It lists what resolves, not what is worth trading. There is no signal here beyond timing.
- Close time is the venue's stated close, and venues do move it. Treat it as scheduled, not guaranteed.
- Trading close is not payout. A market can settle late while an outcome is disputed.
- The Kalshi half is tape-derived, so a genuinely traded series that went quiet during the sample can be missing from the board.
- The Polymarket half is volume-ranked, so the quiet tail of markets closing this fortnight is not on it.
- Auto-generated multi-variant parlay series are excluded outright — a settlement calendar is a list of real resolution moments.
What it is built on
- Polymarket gamma open markets with their end dates and daily volume.
- Kalshi trade-api v2 public trade tape, to rank the series actually being traded, and series market listings for their close times.
- Both venues' own close-time fields, parsed as UTC and rendered in your local timezone.
Related reading
- Markets Browser: Search Polymarket, Kalshi, and Manifold in One Place — Guide
- Prediction Market Arbitrage: Polymarket vs Kalshi — Strategy
Tools that pair with it
Search every market on Polymarket, Kalshi, and Manifold.
Just-listed markets, before the flow finds them.
The largest price moves on both venues, with the news beside them.
WhaleTracks is informational analytics, not financial advice. Market data comes from Polymarket, Kalshi and Manifold's public APIs; WhaleTracks is not affiliated with any of them. Past performance does not guarantee future results.