Merge pull request #106 from michealroberts/fix/temporal/get_greenwhi…

…ch_sidereal_time fix: amend get_greenwhich_sidereal_time() to correctly round microseconds in @observerly/celerity.
michealroberts · Apr 24, 2024 · 587dd89 · 587dd89
2 parents 209fb73 + 6b3411e
commit 587dd89
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/src/celerity/temporal.py b/src/celerity/temporal.py
@@ -75,7 +75,12 @@ def get_greenwhich_sidereal_time(date: datetime) -> float:
         T_0 += 24
 
     # Convert the UTC time to a decimal fraction of hours:
-    UTC = (date.microsecond / 1e6) + date.second / 60 + date.minute / 60 + date.hour
+    UTC = (
+        (date.microsecond / 3.6e9)
+        + (date.second / 3600)
+        + (date.minute / 60)
+        + date.hour
+    )
 
     A = UTC * 1.002737909