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-rw-r--r--tz/leapseconds.awk5
1 files changed, 4 insertions, 1 deletions
diff --git a/tz/leapseconds.awk b/tz/leapseconds.awk
index ea0567c..242e9d6 100644
--- a/tz/leapseconds.awk
+++ b/tz/leapseconds.awk
@@ -24,9 +24,12 @@ BEGIN {
print "# See: Levine J. Coordinated Universal Time and the leap second."
print "# URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995"
print "# <https://ieeexplore.ieee.org/document/7909995>."
+ print ""
print "# There were no leap seconds before 1972, because the official mechanism"
print "# accounting for the discrepancy between atomic time and the earth's rotation"
- print "# did not exist."
+ print "# did not exist. The first (\"1 Jan 1972\") data line in leap-seconds.list"
+ print "# does not denote a leap second; it denotes the start of the current definition"
+ print"# of UTC."
print ""
print "# The correction (+ or -) is made at the given time, so lines"
print "# will typically look like:"