Initial commit — Seth Calendar & Decimal Time clock site

Pages: /, /simple, /decimal, /seth, /calendar, /astro, /convert, /timegov Features: Seth Calendar (10×36 + holidays), decimal time, moon phases, astronomy (sun/moon), bidirectional time converter, Seth date display, leap day split cell in calendar grid.
2026-03-08 22:32:38 +00:00
commit a6b3f039d8
48 changed files with 7324 additions and 0 deletions
@@ -0,0 +1,87 @@
+#!/usr/bin/env python3
+import json
+import time
+from datetime import date, datetime, timezone
+from http.server import ThreadingHTTPServer, SimpleHTTPRequestHandler
+from pathlib import Path
+from urllib.parse import urlparse
+
+ROOT = Path(__file__).resolve().parent
+CLOCK_CGI_PATH = "/zzz__2fbc6c3300df7e4483acd44c5044098a9fcc61d6.cgi"
+
+
+def us_dst_dates_for_year(year: int) -> tuple[int, int]:
+    march1 = date(year, 3, 1)
+    first_sunday_march = 1 + ((6 - march1.weekday()) % 7)
+    second_sunday_march = first_sunday_march + 7
+
+    nov1 = date(year, 11, 1)
+    first_sunday_november = 1 + ((6 - nov1.weekday()) % 7)
+
+    return second_sunday_march, first_sunday_november
+
+
+class Handler(SimpleHTTPRequestHandler):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, directory=str(ROOT), **kwargs)
+
+    def do_GET(self):
+        parsed = urlparse(self.path)
+
+        if parsed.path == "/":
+            self.send_response(302)
+            self.send_header("Location", "/timegov/")
+            self.end_headers()
+            return
+
+        if parsed.path in {"/simple", "/simple/"}:
+            self.path = "/index.html"
+            return super().do_GET()
+
+        if parsed.path == "/api/time":
+            self.send_response(200)
+            self.send_header("Content-Type", "application/json")
+            self.send_header("Cache-Control", "no-store")
+            self.end_headers()
+            payload = {
+                "epoch_ms": time.time_ns() // 1_000_000,
+                "iso_utc": datetime.now(timezone.utc).isoformat(),
+            }
+            self.wfile.write(json.dumps(payload).encode("utf-8"))
+            return
+
+        if parsed.path == "/api/timegov/auxdata.xml":
+            now = datetime.now(timezone.utc)
+            dst_start_day, dst_end_day = us_dst_dates_for_year(now.year)
+            xml = (
+                "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+                "<timeData>"
+                f"<currYear>{now.year}</currYear>"
+                f"<DstDates>3 {dst_start_day} 11 {dst_end_day}</DstDates>"
+                "<LeapDate>2099 12 31</LeapDate>"
+                "</timeData>"
+            )
+            self.send_response(200)
+            self.send_header("Content-Type", "application/xml")
+            self.send_header("Cache-Control", "no-store")
+            self.end_headers()
+            self.wfile.write(xml.encode("utf-8"))
+            return
+
+        if parsed.path == CLOCK_CGI_PATH:
+            t2 = time.time_ns() // 1_000
+            t3 = time.time_ns() // 1_000
+            xml = f"<timestamp time2=\"{t2}\" time3=\"{t3}\"/>"
+            self.send_response(200)
+            self.send_header("Content-Type", "application/xml")
+            self.send_header("Cache-Control", "no-store")
+            self.end_headers()
+            self.wfile.write(xml.encode("utf-8"))
+            return
+
+        return super().do_GET()
+
+
+if __name__ == "__main__":
+    server = ThreadingHTTPServer(("0.0.0.0", 8092), Handler)
+    server.serve_forever()