From fdbfdc0e512384dc9eb926cdf3b8bc631f900974 Mon Sep 17 00:00:00 2001
From: pcain-usgs <pcain@usgs.gov>
Date: Mon, 5 Oct 2020 10:43:48 -0600
Subject: [PATCH] create_empty_trace for intervals above minutes

---
 geomagio/TimeseriesUtility.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/geomagio/TimeseriesUtility.py b/geomagio/TimeseriesUtility.py
index 418bbe9c..1c64c522 100644
--- a/geomagio/TimeseriesUtility.py
+++ b/geomagio/TimeseriesUtility.py
@@ -46,6 +46,8 @@ def create_empty_trace(
     trace_starttime = obspy.core.UTCDateTime(
         numpy.ceil(starttime.timestamp / delta) * delta
     )
+    if delta > 60.0:
+        trace_starttime += (delta - 60) / 2
     stats.starttime = trace_starttime
     stats.delta = delta
     # Calculate number of valid samples up to or before endtime
-- 
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